This might be simple but I'm having difficulties getting this right.
I want to be able to maintain the proportions and positions of multiple center aligned DIVs while resizing. Like in a fluid layout.
This is a example jsFiddle: https://jsfiddle.net/qp6pubtv/. I want to maintain this in a fluid environment.
html:
<div>
<div class="outouter">
<div class="outer">
<div class="middleA"></div>
<div class="middleB"></div>
<div class="middleC"></div>
</div>
</div>
</div>
css:
.outouter{
background-color: GreenYellow;
width:300px;
height: 250px;
position: absolute;
}
.outer{
background-color: DarkSeaGreen;
width:90%;
height: 90%;
position: relative;
margin: 0 auto;
}
.middleA{
background-color: CadetBlue;
width:80%;
height: 80%;
position: absolute;
margin: 0 auto;
}
.middleB{
background-color: DarkGoldenRod;
width:70%;
height: 70%;
position: absolute;
margin: 0 auto;
}
.middleC{
background-color: DarkOrchid;
width:60%;
height: 60%;
position: absolute;
margin: 0 auto;
}
You can add left and right properties into each inner block, i.e.
.middleA{
background-color: CadetBlue;
width:80%;
height: 80%;
position: absolute;
left: 0; /*this*/
right: 0; /*this*/
margin: 0 auto;
}
http://jsfiddle.net/qp6pubtv/1/ (I also made the parent 100% width and height)
You need set width for wrapper div width in % or em it gonna main, for each step inner need set dimension relative outer in %. On resize width would be changed.
Related
I am trying to make element position with negative margin - one element should cover a bit the previous one. But it's bit complicated - negative margin should have only child div of #content. See example below. I need to have red element, than yellow element and gray element inside the red one should have negative margin and cover bottom of red one.
I have already tried relative and absolute position, change z-index, but none of these worked for me.
#sectionTitle {
height: 150px;
text-align: center;
margin: 0 auto;
width: 100%;
position: relative;
z-index: 1;
background: red;
}
#content {
background: yellow;
position: relative;
width: 100%;
height: auto;
min-height: 300px;
overflow: auto;
z-index: 20;
}
#content .block {
position: relative;
background: #eee;
width: 90%;
top: -50px;
margin: 0 auto 0 auto;
box-sizing: border-box;
height: auto;
min-height: 400px;
z-index: 30;
}
<div id="sectionTitle">
...some text...
</div>
<div id="content">
<div class="block">
...element which should cover bottom of #sectionTitle element
</div>
</div>
Now when I inspect the element, .block goes 50px to #sectionTitle, but it's not visible, because sectionTitle element covers it.
Simply remove z-index (to avoid the creation of a stacking context1) and overlow:auto (to avoid the creation of a block formatting context2) from the #content div:
#sectionTitle {
height: 150px;
text-align: center;
margin: 0 auto;
width: 100%;
position: relative;
z-index: 1;
background: red;
}
#content {
background: yellow;
width: 100%;
height: auto;
min-height: 300px;
}
#content .block {
position: relative;
background: #eee;
width: 90%;
top: -50px;
margin: 0 auto 0 auto;
box-sizing: border-box;
height: auto;
min-height: 400px;
z-index: 30;
}
<div id="sectionTitle">
...some text...
</div>
<div id="content">
<div class="block">
...element which should cover bottom of #sectionTitle element
</div>
</div>
1Why can't an element with a z-index value cover its child?
2What formatting context applies to elements that don't create their own?
Recently I have come across a problem for which I am not finding any appropriate solution.
Below is the image which gives an idea of what i am trying to achieve:
The div shown by the arrow is the mark of the problem which i am finding a solution for.
The problem is I want the div to be extended to full screen.
This div is inside a parent div who has a fixed width due to which i am not able to extend my image to full screen.
Have tried giving overflow to parent but isn't working.
I have tried below solution which is working to a certain extent but need a reliable solution.
width: 100%;
left: 0;
position: absolute;
margin-left: calc(-31.5vw);
align-content: center;
Could someone please provide some solution to this?
html, body
{width: 100%; height: 100%; overflow: hidden;}
#parent{
display: block;
background-color: yellow;
border: 1px solid red;
position: fixed;
width: 200px;
height:100%;
}
#child1{
background-color: red;
display: block;
border: 1px solid yellow;
position: absolute;
width: 100vw;
margin-left: calc(200px - 100%);
//top:0px
}
<div id="parent">parent with position: fixed
<div id="child1">child wrapper (uncomment top to fit the parent wrapper)</div>
</div>
use Viewport Sizes so it will cover the whole page (vw and vh)
#first {
width: 100px;
height: 100px;
background:gray;
position: fixed;
top: 0;
left: 0;
}
#second{
width: 100vw;
height: 100vh;
background:blue;
position:absolute;
}
<div id="first">
<div id="second">
something
</div>
</div>
The below code snippet should work, if I understand your question correctly. Setting the width of the child div to 100vw makes the div 100% of the width of the viewport (window).
Also note that in order to get the child to start at the left of the viewport and not the left of the parent, I gave the child a position of absolute and a left of 0. Because the parent is not positioned, it starts the left of the child at the left of the viewport (the closest positioned ancestor).
#parentDiv {
width: 250px;
height: 250px;
margin: 0 auto;
background-color: orange;
border: 2px solid red;
}
#childDiv {
/* 100vw is 100% of the viewport width. */
width: 100vw;
height: 50px;
background-color: lightblue;
box-sizing: border-box;
border: 2px solid green;
position: absolute;
left: 0;
}
p {
text-align: center;
}
<html>
<body>
<div id="parentDiv">
<p>Parent</p>
<div id="childDiv"><p>Child</p></div>
</div>
</body>
</html>
I have this simple HTML code, but make me frustrated because it can't center vertically :
<div class="outer">
<div class="inner">
Hello World
</div>
</div>
and here's my CSS :
.outer {
position: relative;
height: 350px;
}
.inner {
position: absolute;
height: 100px;
top: 50%
}
the .inner div is really center vertically, but based on top side of it. because of top: 50%, what I want is this .inner div really centered vertically on top of .outer. how to do that?
You can center your element using css3 even if you don't know the dimensions.
.inner {
position: absolute;
height: 100px;
top: 50%;
transform: translateY(-50%);
-webkit-transform: translateY(-50%);
}
Since you know the height of both elements you can set your top to top: 125px;
(350 - 100) / 2.
UPDATED WITH JQUERY
http://jsfiddle.net/yf0ncd7f/
Actually an easy way to center a absolute div is to use margin: auto;
section {
width: 100%;
height: 800px;
position: relative;
background: #eee;
}
div {
width: 500px;
height: 300px;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
background: orange;
}
<section>
<div></div>
</section>
I added borders to differentiate clearly
Is this you want?
http://plnkr.co/edit/JRct1x95gnIUl8jITzG0?p=preview
.outer {
position: relative;
height: 150px;
border : 1px solid #f00;
}
.inner {
position: absolute;
height: 80px;
top:0;
bottom:0;
margin:auto;
border : 1px solid #0f0;
}
You could use this CSS trick to make the div vertically centered (and optionally horizontally as well). This works for a parent div of any height and width, as long as they are specified.
.inner {
position:absolute;
// The height and width of the element have to be set for this to work
height:100px;
width:100px;
// Setting the top and bottom to 0px as well as the margins to auto
// causes the div to be centered vertically.
top: 0px;
bottom: 0px;
margin-top: auto;
margin-bottom: auto;
// To also center the div horizontally, do the same for
// left, right and the margins.
left: 0px;
right: 0px;
margin-left:auto;
margin-right:auto;
}
Note that this solution only works when the height of the parent div is known beforehand and is specified. So the parent element needs to have height:100px or whatever amount of pixels you need it to be. Also the height can't be percentual, meaning that if the height of the parent div is declared as height:50%, this will NOT work.
The inner div can actually have a
You can set it by line-height property set it to the height of the div as in your code it should be line-height: 100px;
.outer {
position: relative;
height: 350px;
background: gray;
}
.inner {
position: absolute;
height: 100px;
line-height: 100px;
background: blue;
}
<div class="outer">
<div class="inner">
Hello World
</div>
</div>
Im building a website and the footer wont stick at the bottom. Could someone help me with this issue?
CSS
#footer {
background-color: #454245;
bottom: 0;
float: right;
height: 200px;
left: 0;
margin-top: auto;
overflow: hidden;
position: relative;
width: 100%;
}
Try like this: LINK
HTML:
<div class="wrapper">
<p>Your content goes here.</p>
<div class="push"></div>
</div>
<div class="footer">
<p>Footer content</p>
</div>
CSS:
* {
margin: 0;
}
html, body {
height: 100%;
}
.wrapper {
min-height: 100%;
height: auto !important;
height: 100%;
margin: 0 auto -155px; /* the bottom margin is the negative value of the footer's height */
}
.footer,.push{
background-color:#ccc;
height: 155px;
}
You will have to provide position as absolute and it will only work when you can provide a wrapper or a parent div with position relative.
Look at this fiddle [http://jsfiddle.net/tLyC6/]1
You can have a sticky footer by setting its position: fixed (not relative) with bottom: 0
#footer {
background-color: #454245;
bottom: 0;
height: 200px;
overflow: hidden;
position: fixed;
width: 100%;
}
If you want footer to stick at the bottom, you can do it with using less code.
#footer {
background-color: #454245;
height: 200px;
margin:0 auto;
width: 100%;
}
What I am trying to is have a header image centered on the top with a different color background on either side, dynamically filling the rest of the page. The structure would look like this:
<div id="Header_Container">
<div id="Header_Left"></div>
<div id="Header_Center"></div>
<div id="Header_Right"></div>
</div>
The Header_Center is of 960px and the Header_Left and Header_Right should fill either side of the image to the edge of the page and change width as the page width changes.
I can not get the CSS to work properly.
I assume you want those 3 divs to fill each with different content, the outsides filled fluidly or multiline. Otherwise the answer could be much 1) more simple. I also assume that the center div defines the total height of the header.
Given these two assupmtions, still a few different scenarios are thinkable of which I will give 4 examples from which you can choose the best fitting solution.
The HTML is exactly yours.
The CSS looks like:
#Header_Container {
width: 100%;
position: relative;
}
#Header_Left {
position: absolute;
left: 0;
right: 50%;
margin-right: 480px;
}
#Header_Right {
position: absolute;
left: 50%;
right: 0;
margin-left: 480px;
top: 0;
}
#Header_Center {
width: 960px;
position: relative;
left: 50%;
margin-left: -480px;
}
Now, you could change behaviour of left and right with a few extra styles:
height: 100%;
overflow: hidden;
See demonstration fiddle.
1) When the sides may be partially invisible outside the browser window (in case which you would align content in de left div to the right, and vise versa), then I suggest the solution in this fiddle demo which does not require absolute positioning at all so that any content below the header is properly cleared in all circumstances.
You must fix it using padding and box model + position : relative - it can be done without HTML Change
<div id="Header_Container">
<div id="Header_Left"></div>
<div id="Header_Right"></div>
<div id="Header_Center"></div>
</div>
And CSS ( 100px is for example )
#Header_Container{ overflow: hidden; height: 100px; }
#Header_Container *{ box-sizing: border-box; height: 100%; }
#Header_Left{ width: 50%; padding-right: 480px; }
#Header_Right{ margin-left: 50%; width: 50%; padding-left: 480px; position: relative; top: -100% };
#Header_Center{ margin: 0 auto; width: 960px; position: relative; top: -200%; }
Example is here http://jsfiddle.net/ZAALB/2/
EDITed incorrect example
If I got you right then this might be a possible solution.
#container {
width: 100%;
height: 150px;
}
#left {
position: absolute;
left: 0;
width: 50%;
height: 150px;
background-color: #FF0000;
}
#right {
position: absolute;
right: 0;
width: 50%;
height: 150px;
background-color: #0000FF;
}
#center {
position: absolute;
left: 50%;
margin-left: -480px;
width: 960px;
height: 150px;
background-color: #888888;
}
#left basically says that the element will be positioned absolute and attached to the left side with a width of 50%. Same applies to #right just for the right side.
#center positions the element absolute pushed 50% to the left and then with a negative margin of width/2 which in your case would be 480px to position it in the center.
The order of the elements in the HTML is important for this hack.
<div id="container">
<div id="left"></div>
<div id="right"></div>
<div id="center"></div>
</div>
The #center DIV must be the last element if you don't want to work with z-indexes.
Here's a fiddle to test it.
HTML:
<div id="Header_Container">
<div class="Header_Side" id="Header_Left"></div>
<div class="Header_Side" id="Header_Right"></div>
<div id="Header_Center"></div>
</div>
CSS:
#Header_Container {
position: relative;
width: 100%;
}
#Header_Container > div {
height: 158px; /* height of the image */
}
.Header_Side {
position: absolute;
width: 50%;
}
#Header_Left {
left: 0;
background-color: blue;
}
#Header_Right {
left: 50%;
background-color: green;
}
#Header_Center {
position: relative;
width: 158px; /* width of the image */
margin: 0 auto;
background-image: url('...');
}
Also see this example.
This works, but you need to change your HTML: http://jsfiddle.net/gG7r7/1/
HTML
<div id="header_background_container">
<div id="header_left"></div>
<div id="header_right"></div>
</div>
<div id="header_content_container">
<div id="header_content"><p>Content goes here</p></div>
</div>
CSS
#header_content_container {
position:absolute;
z-index:1;
width: 100%;
height: 100%;
}
#header_content {
width: 960px;
margin: 0 auto;
background: red;
height: 100%;
}
#header_left {
background: white;
width: 50%;
height: 100%;
position: absolute;
z-index: 0;
}
#header_right {
background: black;
width: 50%;
height: 100%;
position: absolute;
z-index: 0;
}