Not able to vertically align items in flexbox - css

I am learning to use flexbox and I am not able to align content vertically inside of the class .headercontent. it seems to honor everything else like justify-content but ignores align-content. I searched and found this thread and this seems to suggest that the parent should have height explicitly set. I have set height by setting flex-basis and flex-grow and a min-height. But still by div containing the h1 is stuck to the top of the header. I want that green div to be in the vertical center of the header. what am I doing wrong?
html {
box-sizing: border-box;
margin: 0;
padding: 0;
font-size: 100%;
line-height: 1.2em;
}
body {
display: flex;
flex-direction: column;
justify-content: flex-start;
align-items: stretch;
height: 100vh;
background-color: #cdc9c1;
}
header {
background-color: #a99879;
flex-basis: 10%;
flex-grow: 1;
min-height: 20px;
}
main {
background-color: #5b431a;
flex-basis: 80%;
flex-grow: 8;
}
footer {
background-color: #77613c;
flex-basis: 10%;
flex-grow: 1;
}
.headercontent {
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
background-color: green;
min-height: 20px;
}
.navstyle {
list-style-type: none;
}
<html>
<head>
</head>
<body>
<header>
<div class="headercontent">
<h1>This is the header</h1>
</div>
</header>
<nav>
<ul>
<li>section1</li>
<li>section2</li>
<li>section3</li>
</ul>
</nav>
<main>
<p> this is the main body</p>
</main>
<footer>
<p> this is the footer </p>
</footer>
</body>
</html>
Here is the codeine link to my work https://codepen.io/knows_not_much/pen/rNxXoOM

I want that green div to be in the vertical center of the header. what
am I doing wrong?
Your header element is taking up 10% height of body. Your .headercontent does not take up the entire defined height of the header. Therefore, it is going to sit at the top. To address this, you can assign the header element to be a flex container and that is where you assign align-items: center; justify-content: center properties
header {
background-color: #a99879;
flex-basis: 10%;
flex-grow: 1;
display: flex; /* add these */
align-items: center; /* add these */
justify-content: center; /* add these */
}
Assign width: 100% to the .headercontent afterwards (as needed) if you must have the green background take up the space

Related

Spacing elements evenly in a div [duplicate]

Imagine the following layout, where the dots represent the space between the boxes:
[Left box]......[Center box]......[Right box]
When I remove the right box, I like the center box to still be in the center, like so:
[Left box]......[Center box].................
The same goes for if I would remove the left box.
................[Center box].................
Now when the content within the center box gets longer, it will take up as much available space as needed while remaining centered. The left and right box will never shrink and thus when where is no space left the overflow:hidden and text-overflow: ellipsis will come in effect to break the content;
[Left box][Center boxxxxxxxxxxxxx][Right box]
All the above is my ideal situation, but I have no idea how to accomplish this effect. Because when I create a flex structure like so:
.parent {
display : flex; // flex box
justify-content : space-between; // horizontal alignment
align-content : center; // vertical alignment
}
If the left and right box would be exactly the same size, I get the desired effect. However when one of the two is from a different size the centered box is not truly centered anymore.
Is there anyone that can help me?
Update
A justify-self would be nice, this would be ideal:
.leftBox {
justify-self : flex-start;
}
.rightBox {
justify-self : flex-end;
}
If the left and right boxes would be exactly the same size, I get the desired effect. However when one of the two is a different size the centered box is not truly centered anymore. Is there anyone that can help me?
Here's a method using flexbox to center the middle item, regardless of the width of siblings.
Key features:
pure CSS
no absolute positioning
no JS/jQuery
Use nested flex containers and auto margins:
.container {
display: flex;
}
.box {
flex: 1;
display: flex;
justify-content: center;
}
.box:first-child > span { margin-right: auto; }
.box:last-child > span { margin-left: auto; }
/* non-essential */
.box {
align-items: center;
border: 1px solid #ccc;
background-color: lightgreen;
height: 40px;
}
p {
text-align: center;
margin: 5px 0 0 0;
}
<div class="container">
<div class="box"><span>short text</span></div>
<div class="box"><span>centered text</span></div>
<div class="box"><span>loooooooooooooooong text</span></div>
</div>
<p>↑<br>true center</p>
Here's how it works:
The top-level div (.container) is a flex container.
Each child div (.box) is now a flex item.
Each .box item is given flex: 1 in order to distribute container space equally (more details).
Now the items are consuming all space in the row and are equal width.
Make each item a (nested) flex container and add justify-content: center.
Now each span element is a centered flex item.
Use flex auto margins to shift the outer spans left and right.
You could also forgo justify-content and use auto margins exclusively.
But justify-content can work here because auto margins always have priority.
8.1. Aligning with auto
margins
Prior to alignment via justify-content and align-self, any
positive free space is distributed to auto margins in that dimension.
Use three flex items in the container
Set flex: 1 to the first and last ones. This makes them grow equally to fill the available space left by the middle one.
Thus, the middle one will tend to be centered.
However, if the first or last item has a wide content, that flex item will also grow due to the new min-width: auto initial value.
Note Chrome doesn't seem to implement this properly. However, you can set min-width to -webkit-max-content or -webkit-min-content and it will work too.
Only in that case the middle element will be pushed out of the center.
.outer-wrapper {
display: flex;
}
.item {
background: lime;
margin: 5px;
}
.left.inner-wrapper, .right.inner-wrapper {
flex: 1;
display: flex;
min-width: -webkit-min-content; /* Workaround to Chrome bug */
}
.right.inner-wrapper {
justify-content: flex-end;
}
.animate {
animation: anim 5s infinite alternate;
}
#keyframes anim {
from { min-width: 0 }
to { min-width: 100vw; }
}
<div class="outer-wrapper">
<div class="left inner-wrapper">
<div class="item animate">Left</div>
</div>
<div class="center inner-wrapper">
<div class="item">Center</div>
</div>
<div class="right inner-wrapper">
<div class="item">Right</div>
</div>
</div>
<!-- Analogous to above --> <div class="outer-wrapper"><div class="left inner-wrapper"><div class="item">Left</div></div><div class="center inner-wrapper"><div class="item animate">Center</div></div><div class="right inner-wrapper"><div class="item">Right</div></div></div><div class="outer-wrapper"><div class="left inner-wrapper"><div class="item">Left</div></div><div class="center inner-wrapper"><div class="item">Center</div></div><div class="right inner-wrapper"><div class="item animate">Right</div></div></div>
The key is to use flex-basis. Then the solution is simple as:
.parent {
display: flex;
justify-content: space-between;
}
.left, .right {
flex-grow: 1;
flex-basis: 0;
}
CodePen is available here.
Here's an answer that uses grid instead of flexbox. This solution doesn't require extra grandchild elements in the HTML like the accepted answer does. And it works correctly even when the content on one side gets long enough to overflow into the center, unlike the grid answer from 2019.
The one thing this solution doesn't do is show an ellipsis or hide the extra content in the center box, as described in the question.
section {
display: grid;
grid-template-columns: 1fr auto 1fr;
}
section > *:last-child {
white-space: nowrap;
text-align: right;
}
/* not essential; just for demo purposes */
section {
background-color: #eee;
font-family: helvetica, arial;
font-size: 10pt;
padding: 4px;
}
section > * {
border: 1px solid #bbb;
padding: 2px;
}
<section>
<div>left</div>
<div>center</div>
<div>right side is longer</div>
</section>
<section>
<div>left</div>
<div>center</div>
<div>right side is much, much longer</div>
</section>
<section>
<div>left</div>
<div>center</div>
<div>right side is much, much longer, super long in fact</div>
</section>
Instead of defaulting to using flexbox, using grid solves it in 2 lines of CSS without additional markup inside the top level children.
HTML:
<header class="header">
<div class="left">variable content</div>
<div class="middle">variable content</div>
<div class="right">variable content which happens to be very long</div>
</header>
CSS:
.header {
display: grid;
grid-template-columns: [first] 20% auto [last] 20%;
}
.middle {
/* use either */
margin: 0 auto;
/* or */
text-align: center;
}
Flexbox rocks but shouldn't be the answer for everything. In this case grid is clearly the cleanest option.
Even made a codepen for your testing pleasure:
https://codepen.io/anon/pen/mooQOV
You can do this like so:
.bar {
display: flex;
background: #B0BEC5;
}
.l {
width: 50%;
flex-shrink: 1;
display: flex;
}
.l-content {
background: #9C27B0;
}
.m {
flex-shrink: 0;
}
.m-content {
text-align: center;
background: #2196F3;
}
.r {
width: 50%;
flex-shrink: 1;
display: flex;
flex-direction: row-reverse;
}
.r-content {
background: #E91E63;
}
<div class="bar">
<div class="l">
<div class="l-content">This is really long content. More content. So much content.</div>
</div>
<div class="m">
<div class="m-content">This will always be in the center.</div>
</div>
<div class="r">
<div class="r-content">This is short.</div>
</div>
</div>
Here is another way to do it, using display: flex in the parents and childs:
.Layout{
display: flex;
justify-content: center;
}
.Left{
display: flex;
justify-content: flex-start;
width: 100%;
}
.Right{
display: flex;
justify-content: flex-end;
width: 100%;
}
<div class = 'Layout'>
<div class = 'Left'>I'm on the left</div>
<div class = 'Mid'>Centered</div>
<div class = 'Right'>I'm on the right</div>
</div>
A slightly more robust grid solution looks like this:
.container {
overflow: hidden;
border-radius: 2px;
padding: 4px;
background: orange;
display: grid;
grid-template-columns: minmax(max-content, 1fr) auto minmax(max-content, 1fr);
}
.item > div {
display: inline-block;
padding: 6px;
border-radius: 2px;
background: teal;
}
.item:last-child > div {
float: right;
}
<div class="container">
<div class="item"><div contenteditable>edit the text to test the layout</div></div>
<div class="item"><div contenteditable>just click me and</div></div>
<div class="item"><div contenteditable>edit</div></div>
</div>
And here you can see it in Codepen: https://codepen.io/benshope2234/pen/qBmZJWN
I wanted the exact result shown in the question, I combined answers from gamliela and Erik Martín Jordán and it works best for me.
.parent {
display: flex;
justify-content: space-between;
}
.left, .right {
flex-grow: 1;
flex-basis: 0;
}
.right {
display: flex;
justify-content: flex-end;
}
you can also use this simple way to reach exact center alignment for middle element :
.container {
display: flex;
justify-content: space-between;
}
.container .sibling {
display: flex;
align-items: center;
height: 50px;
background-color: gray;
}
.container .sibling:first-child {
width: 50%;
display: flex;
justify-content: space-between;
}
.container .sibling:last-child {
justify-content: flex-end;
width: 50%;
box-sizing: border-box;
padding-left: 100px; /* .center's width divided by 2 */
}
.container .sibling:last-child .content {
text-align: right;
}
.container .sibling .center {
height: 100%;
width: 200px;
background-color: lightgreen;
transform: translateX(50%);
}
codepen: https://codepen.io/ErAz7/pen/mdeBKLG
Althought I might be late on this one, all those solutions seems complicated and may not work depending on the cases you're facing.
Very simply, just wrap the component you want to center with position : absolute, while letting the other two with justify-content : space-between, like so :
CSS:
.container {
display: flex;
justify-content: space-between;
align-items: center;
background-color: lightgray;
}
.middle {
position: absolute;
margin-left: auto;
margin-right: auto;
/* You should adapt percentages here if you have a background ; else, left: 0 and right: 0 should do the trick */
left: 40%;
right: 40%;
text-align: center;
}
/* non-essential, copied from #Brian Morearty answer */
.element {
border: 1px solid #ccc;
background-color: lightgreen;
}
p {
margin: 5px;
padding: 5px;
}
<div class="container">
<p class="element">First block</p>
<p class="middle element">Middle block</p>
<p class="element">Third THICC blockkkkkkkkk</p>
</div>
Michael Benjamin has a decent answer but there is no reason it can't / shouldn't be simplified further:
.container {
display: flex;
}
.box {
flex: 1;
display: flex;
justify-content: center;
}
.box:first-child { justify-content: left; }
.box:last-child { justify-content: right; }
And html
<div class="container">
<div class="box">short text</div>
<div class="box">centered tex</div>
<div class="box">loooooooooooooooong text</div>
</div>

Flex items not filling the height of its parent

I have a container with children items:
HTML
<div id="container">
<div className="item">1</div>
<div className="item">2</div>
<div className="item">3</div>
<div className="item">4</div>
</div>
CSS
#container {
display: flex;
flex-direction: row;
gap: 10px;
}
.item {
flex: 1;
text-align: center;
padding: 0px;
font-size: 30px;
background: #34ace0;
}
This flexbox container sits inside a grid layout, and the cell to the left of the one here has contents which cause the height of the flexbox shown here to be higher than the contents, as shown here:
I need the squares with the numbers inside to stretch/fill the height of its container, like this
...but with the text centered vertically as well.
I tried setting the height of the .item to 100% but it doesn't fill. Is there something like the free-remaining-space used in grid for flexbox?
Make sure the grid layout container has height of 100vh and the container you've shown also has height of 100%.
To center the text inside of each item, you can make each of them display: flex.
.grid-container {
height: 100vh;
}
#container {
height: 100%;
display: flex;
flex-direction: row;
gap: 10px;
}
.item {
height: 100%;
display: flex;
align-items: center;
justify-content: center;
flex: 1;
padding: 0px;
font-size: 30px;
background: #34ace0;
}

Centering DIV horizontally with uneven width DIVs on each side [duplicate]

Imagine the following layout, where the dots represent the space between the boxes:
[Left box]......[Center box]......[Right box]
When I remove the right box, I like the center box to still be in the center, like so:
[Left box]......[Center box].................
The same goes for if I would remove the left box.
................[Center box].................
Now when the content within the center box gets longer, it will take up as much available space as needed while remaining centered. The left and right box will never shrink and thus when where is no space left the overflow:hidden and text-overflow: ellipsis will come in effect to break the content;
[Left box][Center boxxxxxxxxxxxxx][Right box]
All the above is my ideal situation, but I have no idea how to accomplish this effect. Because when I create a flex structure like so:
.parent {
display : flex; // flex box
justify-content : space-between; // horizontal alignment
align-content : center; // vertical alignment
}
If the left and right box would be exactly the same size, I get the desired effect. However when one of the two is from a different size the centered box is not truly centered anymore.
Is there anyone that can help me?
Update
A justify-self would be nice, this would be ideal:
.leftBox {
justify-self : flex-start;
}
.rightBox {
justify-self : flex-end;
}
If the left and right boxes would be exactly the same size, I get the desired effect. However when one of the two is a different size the centered box is not truly centered anymore. Is there anyone that can help me?
Here's a method using flexbox to center the middle item, regardless of the width of siblings.
Key features:
pure CSS
no absolute positioning
no JS/jQuery
Use nested flex containers and auto margins:
.container {
display: flex;
}
.box {
flex: 1;
display: flex;
justify-content: center;
}
.box:first-child > span { margin-right: auto; }
.box:last-child > span { margin-left: auto; }
/* non-essential */
.box {
align-items: center;
border: 1px solid #ccc;
background-color: lightgreen;
height: 40px;
}
p {
text-align: center;
margin: 5px 0 0 0;
}
<div class="container">
<div class="box"><span>short text</span></div>
<div class="box"><span>centered text</span></div>
<div class="box"><span>loooooooooooooooong text</span></div>
</div>
<p>↑<br>true center</p>
Here's how it works:
The top-level div (.container) is a flex container.
Each child div (.box) is now a flex item.
Each .box item is given flex: 1 in order to distribute container space equally (more details).
Now the items are consuming all space in the row and are equal width.
Make each item a (nested) flex container and add justify-content: center.
Now each span element is a centered flex item.
Use flex auto margins to shift the outer spans left and right.
You could also forgo justify-content and use auto margins exclusively.
But justify-content can work here because auto margins always have priority.
8.1. Aligning with auto
margins
Prior to alignment via justify-content and align-self, any
positive free space is distributed to auto margins in that dimension.
Use three flex items in the container
Set flex: 1 to the first and last ones. This makes them grow equally to fill the available space left by the middle one.
Thus, the middle one will tend to be centered.
However, if the first or last item has a wide content, that flex item will also grow due to the new min-width: auto initial value.
Note Chrome doesn't seem to implement this properly. However, you can set min-width to -webkit-max-content or -webkit-min-content and it will work too.
Only in that case the middle element will be pushed out of the center.
.outer-wrapper {
display: flex;
}
.item {
background: lime;
margin: 5px;
}
.left.inner-wrapper, .right.inner-wrapper {
flex: 1;
display: flex;
min-width: -webkit-min-content; /* Workaround to Chrome bug */
}
.right.inner-wrapper {
justify-content: flex-end;
}
.animate {
animation: anim 5s infinite alternate;
}
#keyframes anim {
from { min-width: 0 }
to { min-width: 100vw; }
}
<div class="outer-wrapper">
<div class="left inner-wrapper">
<div class="item animate">Left</div>
</div>
<div class="center inner-wrapper">
<div class="item">Center</div>
</div>
<div class="right inner-wrapper">
<div class="item">Right</div>
</div>
</div>
<!-- Analogous to above --> <div class="outer-wrapper"><div class="left inner-wrapper"><div class="item">Left</div></div><div class="center inner-wrapper"><div class="item animate">Center</div></div><div class="right inner-wrapper"><div class="item">Right</div></div></div><div class="outer-wrapper"><div class="left inner-wrapper"><div class="item">Left</div></div><div class="center inner-wrapper"><div class="item">Center</div></div><div class="right inner-wrapper"><div class="item animate">Right</div></div></div>
The key is to use flex-basis. Then the solution is simple as:
.parent {
display: flex;
justify-content: space-between;
}
.left, .right {
flex-grow: 1;
flex-basis: 0;
}
CodePen is available here.
Here's an answer that uses grid instead of flexbox. This solution doesn't require extra grandchild elements in the HTML like the accepted answer does. And it works correctly even when the content on one side gets long enough to overflow into the center, unlike the grid answer from 2019.
The one thing this solution doesn't do is show an ellipsis or hide the extra content in the center box, as described in the question.
section {
display: grid;
grid-template-columns: 1fr auto 1fr;
}
section > *:last-child {
white-space: nowrap;
text-align: right;
}
/* not essential; just for demo purposes */
section {
background-color: #eee;
font-family: helvetica, arial;
font-size: 10pt;
padding: 4px;
}
section > * {
border: 1px solid #bbb;
padding: 2px;
}
<section>
<div>left</div>
<div>center</div>
<div>right side is longer</div>
</section>
<section>
<div>left</div>
<div>center</div>
<div>right side is much, much longer</div>
</section>
<section>
<div>left</div>
<div>center</div>
<div>right side is much, much longer, super long in fact</div>
</section>
Instead of defaulting to using flexbox, using grid solves it in 2 lines of CSS without additional markup inside the top level children.
HTML:
<header class="header">
<div class="left">variable content</div>
<div class="middle">variable content</div>
<div class="right">variable content which happens to be very long</div>
</header>
CSS:
.header {
display: grid;
grid-template-columns: [first] 20% auto [last] 20%;
}
.middle {
/* use either */
margin: 0 auto;
/* or */
text-align: center;
}
Flexbox rocks but shouldn't be the answer for everything. In this case grid is clearly the cleanest option.
Even made a codepen for your testing pleasure:
https://codepen.io/anon/pen/mooQOV
You can do this like so:
.bar {
display: flex;
background: #B0BEC5;
}
.l {
width: 50%;
flex-shrink: 1;
display: flex;
}
.l-content {
background: #9C27B0;
}
.m {
flex-shrink: 0;
}
.m-content {
text-align: center;
background: #2196F3;
}
.r {
width: 50%;
flex-shrink: 1;
display: flex;
flex-direction: row-reverse;
}
.r-content {
background: #E91E63;
}
<div class="bar">
<div class="l">
<div class="l-content">This is really long content. More content. So much content.</div>
</div>
<div class="m">
<div class="m-content">This will always be in the center.</div>
</div>
<div class="r">
<div class="r-content">This is short.</div>
</div>
</div>
Here is another way to do it, using display: flex in the parents and childs:
.Layout{
display: flex;
justify-content: center;
}
.Left{
display: flex;
justify-content: flex-start;
width: 100%;
}
.Right{
display: flex;
justify-content: flex-end;
width: 100%;
}
<div class = 'Layout'>
<div class = 'Left'>I'm on the left</div>
<div class = 'Mid'>Centered</div>
<div class = 'Right'>I'm on the right</div>
</div>
A slightly more robust grid solution looks like this:
.container {
overflow: hidden;
border-radius: 2px;
padding: 4px;
background: orange;
display: grid;
grid-template-columns: minmax(max-content, 1fr) auto minmax(max-content, 1fr);
}
.item > div {
display: inline-block;
padding: 6px;
border-radius: 2px;
background: teal;
}
.item:last-child > div {
float: right;
}
<div class="container">
<div class="item"><div contenteditable>edit the text to test the layout</div></div>
<div class="item"><div contenteditable>just click me and</div></div>
<div class="item"><div contenteditable>edit</div></div>
</div>
And here you can see it in Codepen: https://codepen.io/benshope2234/pen/qBmZJWN
I wanted the exact result shown in the question, I combined answers from gamliela and Erik Martín Jordán and it works best for me.
.parent {
display: flex;
justify-content: space-between;
}
.left, .right {
flex-grow: 1;
flex-basis: 0;
}
.right {
display: flex;
justify-content: flex-end;
}
you can also use this simple way to reach exact center alignment for middle element :
.container {
display: flex;
justify-content: space-between;
}
.container .sibling {
display: flex;
align-items: center;
height: 50px;
background-color: gray;
}
.container .sibling:first-child {
width: 50%;
display: flex;
justify-content: space-between;
}
.container .sibling:last-child {
justify-content: flex-end;
width: 50%;
box-sizing: border-box;
padding-left: 100px; /* .center's width divided by 2 */
}
.container .sibling:last-child .content {
text-align: right;
}
.container .sibling .center {
height: 100%;
width: 200px;
background-color: lightgreen;
transform: translateX(50%);
}
codepen: https://codepen.io/ErAz7/pen/mdeBKLG
Althought I might be late on this one, all those solutions seems complicated and may not work depending on the cases you're facing.
Very simply, just wrap the component you want to center with position : absolute, while letting the other two with justify-content : space-between, like so :
CSS:
.container {
display: flex;
justify-content: space-between;
align-items: center;
background-color: lightgray;
}
.middle {
position: absolute;
margin-left: auto;
margin-right: auto;
/* You should adapt percentages here if you have a background ; else, left: 0 and right: 0 should do the trick */
left: 40%;
right: 40%;
text-align: center;
}
/* non-essential, copied from #Brian Morearty answer */
.element {
border: 1px solid #ccc;
background-color: lightgreen;
}
p {
margin: 5px;
padding: 5px;
}
<div class="container">
<p class="element">First block</p>
<p class="middle element">Middle block</p>
<p class="element">Third THICC blockkkkkkkkk</p>
</div>
Michael Benjamin has a decent answer but there is no reason it can't / shouldn't be simplified further:
.container {
display: flex;
}
.box {
flex: 1;
display: flex;
justify-content: center;
}
.box:first-child { justify-content: left; }
.box:last-child { justify-content: right; }
And html
<div class="container">
<div class="box">short text</div>
<div class="box">centered tex</div>
<div class="box">loooooooooooooooong text</div>
</div>

when i set div style overflow is scroll, justify-content is flex-start, flex layout wrap is incorrect

If I set #main.overflow is none, I get what I want.
And if I set #main.overflow is scroll, which is not what I want, the last element is broken by error.
Why do scroll bars cause Flex layout errors?
right result
* {
padding: 0;
margin: 0;
box-sizing: border-box;
}
#main {
overflow: none;
width: 200px;
background-color: #321;
display: flex;
flex-direction: row;
padding: 10px;
flex-wrap: wrap;
justify-content: flex-start;
}
.el {
width: 50px;
height: 50px;
background-color: red;
margin: 5px;
}
<div id="main">
<div class="el"></div>
<div class="el"></div>
<div class="el"></div>
</div>
incorrect result
* {
padding: 0;
margin: 0;
box-sizing: border-box;
}
#main {
overflow: scroll;
width: 200px;
background-color: #321;
display: flex;
flex-direction: row;
padding: 10px;
flex-wrap: wrap;
justify-content: flex-start;
}
.el {
width: 50px;
height: 50px;
background-color: red;
margin: 5px;
}
<div id="main">
<div class="el"></div>
<div class="el"></div>
<div class="el"></div>
</div>
The simple answer is: The scrollbars take up space inside the div. If you force them to render by setting overflow: scroll you take up some of the space inside the flexbox and flex: wrap property causes the content to wrap.
Your main flexbox can handle content of 180px width*.
The content width is also exactly 180px**
This allows no space for the scrollbars and the content ends up wrapping onto the next line.
There is a deprecated property: overflow: overlay which causes the scrollbars to not take up space but it has very limited support and is deprecated so I would not recommend using it.
*Because the width is set to 200px which includes 10px padding on each side. The box-sizing: border-box property makes it so the padding is included in the height and width calculation
**Each el has 60px width including the margin on both sides.

Breaking a line with flexbox centering?

I'm trying to vertically/horizontally center my Title with the Subtitle directly beneath it. Here was my attempt:
html, body, h1 {
margin: 0;
padding: 0;
}
html, body {
width: 100%;
height: 100%;
}
#container {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
<div id="container">
<h1>Main Title</h1>
<span>Subtitle</span>
</div>
As you can see, the subtitle is in the same line as the h1, I'm trying to get it to go beneath it. I've tried setting h1 to display: block; but that seems to not work when using display: flex on the container. Any help would be appreciated.
Set flex-direction: column on container
html, body, h1 {
margin: 0;
padding: 0;
}
html, body {
width: 100%;
height: 100%;
}
#container {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
height: 100vh;
}
<div id="container">
<h1>Main Title</h1>
<span>Subtitle</span>
</div>
Setting flex-direction to column is one solution. It's already provided in another answer.
In some cases, if flex-direction: row is preferred (or a necessity), you can add flex-wrap: wrap to the container and give the first item a 100% width, which forces the second item to the next line.
body, h1 {
margin: 0;
padding: 0;
}
#container {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
flex-wrap: wrap; /* NEW */
align-content: center; /* NEW */
text-align: center; /* NEW */
}
h1 { flex: 0 0 100%; } /* NEW */
<div id="container">
<h1>Main Title</h1>
<span>Subtitle</span>
</div>

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