How to horizontally center a floating element of a variable width?
Edit: I already have this working using a containing div for the floating element and specifying a width for the container (then use margin: 0 auto; for the container). I just wanted to know whether it can be done without using a containing element or at least without having to specify a width for the containing element.
Assuming the element which is floated and will be centered is a div with an id="content"
...
<body>
<div id="wrap">
<div id="content">
This will be centered
</div>
</div>
</body>
And apply the following CSS:
#wrap {
float: left;
position: relative;
left: 50%;
}
#content {
float: left;
position: relative;
left: -50%;
}
Here is a good reference regarding that.
.center {
display: table;
margin: auto;
}
You can use fit-content value for width.
#wrap {
width: -moz-fit-content;
width: -webkit-fit-content;
width: fit-content;
margin: auto;
}
Note: It works only in latest browsers.
This works better when the id = container (which is the outer div) and id = contained (which is the inner div). The problem with the highly recommended solution is that it results in some cases into an horizontal scrolling bar when the browser is trying to cater for the left: -50% attribute. There is a good reference for this solution
#container {
text-align: center;
}
#contained {
text-align: left;
display: inline-block;
}
Say you have a DIV you want centred horizontally:
<div id="foo">Lorem ipsum</div>
In the CSS you'd style it with this:
#foo
{
margin:0 auto;
width:30%;
}
Which states that you have a top and bottom margin of zero pixels, and on either left or right, automatically work out how much is needed to be even.
Doesn't really matter what you put in for the width, as long as it's there and isn't 100%. Otherwise you wouldn't be setting the centre on anything.
But if you float it, left or right, then the bets are off since that pulls it out of the normal flow of elements on the page and the auto margin setting won't work.
The popular answer here does work sometimes, but other times it creates horizontal scroll bars that are tough to deal with - especially when dealing with wide horizontal navigations and large pull down menus. Here is an even lighter-weight version that helps avoid those edge cases:
#wrap {
float: right;
position: relative;
left: -50%;
}
#content {
left: 50%;
position: relative;
}
Proof that it is working!
To more specifically answer your question, it is probably not possible to do without setting up some containing element, however it is very possible to do without specifying a width value. Hope that saves someone out there some headaches!
Can't you just use display: inline block and align to center?
Example.
for 50% element
width: 50%;
display: block;
float: right;
margin-right: 25%;
Related
I have a div that is masked off in terms of its width. Inside, I have 2 divs of the same width floated, so 100% + 100%. This means that either the left is visible or the right is visible at any one time.
In fact, what I'm trying to achieve is almost exactly the same as this:
jquery slide div within a div
Just one difference though. The height of my parent isn't fixed, it's dependent on the child size. So when I apply position: absolute; to the parent, it all goes pear-shaped.
Any solutions to this? I can use flexbox if necessary as I don't support IE8/9.
CSS would be something like this
.outer-wrap {
overflow:hidden;
position:relative;
width:300px;
}
.middle-wrap {
overflow:hidden;
position:absolute; // this doesn't work because it has no fixed height
left:0;
width:600px;
}
.middle-wrap.open {
right:0;
}
.inner-wrap {
float:left;
width:300px;
}
HTML
<div class="outer-wrap">
<div class="middle-wrap">
<div class="inner-wrap"></div>
<div class="inner-wrap"></div>
</div>
</div>
Another edit: I created a codepen, it's here: http://codepen.io/anon/pen/oxwmex CLick on the two buttons on the far right, they switch between the states
As you noted, your solution doesn't work because .middle-wrap has no fixed height. Try it with the following settings (note: no floats, no absolute positions):
.outer-wrap {
overflow-x: hidden;
position: relative;
border: 1px solid red;
width: 300px;
margin: 0 auto;
}
.middle-wrap {
position: relative;
width: 600px;
left: 0px;
}
.inner-wrap {
display: inline-block;
width: 300px;
vertical-align: top;
}
This will display the left of the two .inner-wraps within the visible part of .outer-wrap. To make the right .inner-wrap visible apply something like
jQuery(".middle-wrap").css("left", "-300px")
to the element or event you use for switching between the two inner-wraps. Or if you want it animated:
jQuery(".middle-wrap").aminmate({left: "-300px"})
(Plus another method to switch back to left: 0px)
The heigth of all elements is automatically adjusted to the heigth of the higher of the two .inner-wrap elements.
P.S. (edit): Erase the style="height:100px;" settings from the inner-wraps in the HTML, just fill them with some content to see it working.
please see link below
as you can see there's a text on header (header is an image)
the text is:
mail#yahoo.com (this text is a part of image)
I convert that part of header image to link with below code
<div id="hw"><div id="header"><img src="test.jpg" /></div></div>
and this is #link
#ResponsiveLink {
width: 267px;
height:29px;
display:block;
position:absolute;
top:100px;
margin-left:413px;
}
how can we make that link be responsive in other devices? for example when browser is narrow position of the a tag with #ResponsiveLink id changes but i want it be fixed over my text.
The best way I know, is not to put a big part of your screen as an image. On the other hand you probably don't want to cut the image into several separate images. So, I suggest using CSS Sprit.
After separating the image, you can put the parts beside each other using float, clear, and percentage widths, or use a framework like bootstrap.
If you still want to use the image as a whole header, in a single HTML tag which don't recommend at all, using percentage top for your #ResponsiveLink would work. You should just add width: 100% to all its parents: header, hw, and wrapper.
Following the comments:
#ResponsiveLink {
background: none repeat scroll 0 0 #FF0000;
display: block;
height: 0;
left: 58%;
margin-left: 0;
margin-top: 7%;
padding-bottom: 3%;
position: absolute;
top: 0;
width: 25%;
}
This will fix the problem because of the difference between percentages of position and margin, top percentage is calculated using first absolute parent's height but margin and padding percentages are calculated using parent's width. There's still a problem caused by the max width which you can fix adding a wrapper inside your #head with a width of 100% and no max width.
The other try of using floats and separated images have too many problems to write here, sorry.
What you're currently building isn't a sustainable solution and you should definitely see other replies on how to improve your site layout.
However, if you need a temporary solution, the following CSS changes will work on your current page:
#header {
margin: 0 auto;
max-width: 980px;
position: relative;
}
#ResponsiveLink {
background: none repeat scroll 0 0 #FF0000;
display: block;
height: 30%;
left: 60%;
position: absolute;
right: 12%;
top: 37%;
}
I am relatively new to front-end dev so a bit lost as to how i can go about this. I created a container that contains a slider and some images. My supervisor has a huge screen so obviously there will be empty space at the bottom of the screen. So he doesn't want that. Instead he wants the container to be centered horizontally and vertically based on the size of the user's screen.
How can I do this properly with as minimal code as possible? I believe there is jQuery plugin but wanted to see if there is a better way or if doing this makes sense at all or not?
Due to the flow-based nature of CSS, without Javascript this can only be done if the vertical size of the centered element is fixed, by applying a position:absolute' andtop:50%` within a fixed container, and then use negative margin to offset the container. Click here for JSFiddle Sample.
Alternatively the same effect can be reached by using display:table-cell, but that's kind of messy and loses you a lot of flexibility. Sample already supplied in the other answer here so I'll save myself the effort :)
You can do it easily using a vertical-align property.
Since vertical-align works the desired way way only in a table cell, this trick with display property can give you the desired effect.
#yourDiv {
// give it a size
width: 100px;
height: 100px;
margin: 0 auto;
}
html, body {
height: 100%;
width: 100%;
padding: 0; margin: 0;
}
html {
display: table;
}
body {
display: table-cell;
vertical-align: middle;
}
See a fiddle with demo.
Try this:
HTML:
<div class="center"></div>
CSS:
.center {
width: 300px;
height: 300px;
position: absolute;
left: 50%;
top: 50%;
margin-left: -150px;
margin-top: -150px;
background-color: red;
}
Demo: http://jsfiddle.net/WDth4/
Exactly Center an Image/Div Horizontally and Vertically:
http://css-tricks.com/snippets/css/exactly-center-an-imagediv-horizontally-and-vertically/
How do you code a three-column layout in CSS when the source order jumps around from column to column?
The page has seven sections -- this fiddle shows how the required source order compares to the layout. The number is for its position in the source order and the text is where it should appear on the page.
http://jsfiddle.net/hpr2b/4/
As you can see, there are essentially three columns and three rows, but the elements in the second row shouldn't top-align and the second row shouldn't clear the first row. Each section should be flush with the bottom of the section that is located above it.
Notes:
The source order matches the order that the elements need to appear on mobile devices and unfortunately cannot be changed
I also don't have the option of duplicating sections in the markup and then showing/hiding them based on viewport width
Absolute positioning is unfortunately not an option because the layout must adapt to any viewport width 320px and up
I've tried a number of well-known CSS layout techniques and the above fiddle shows the most successful attempt -- here is the code used for the "top row":
.top-center {
float: left;
width: 55%;
margin-left: 25%;
}
.top-left {
float: left;
width: 25%;
margin-left: -80%;
}
.top-right {
float: right;
width: 20%;
}
Here are the problems I'm encountering:
IE 9/10 is a complete mess (see below)
In Chrome, the "Middle Right" div always clears the "Top Left" div, preventing it from being positioned beneath "Top Right". Also, if the "Top Right" div becomes too tall, it overlaps "Middle Right".
In Firefox, the second "row" top aligns, overlapping the left and right sections of the first row.
Here is what it looks like in IE10:
And here it is in Firefox:
If the positioning is that important and you cannot control the (order of the) HTML code (I assume so from reading your question), I would rather go for having a somewhat usable absolute positioning using CSS, and refine it (onDomReady) using javascript (which gives you a lot more freedom to choose the best algorithm for the layout you need, but still a usable yet not perfect layout for those few anti-javascript-guys out there).
However, it is hard to tell without seeing the actual markup and requirements.
If absolute positioning is absolutely not an option, you'll need to calculate the height of elements prior to the page generating and put each block into the correct column based on heights. Trust me, absolute positioning is much easier!
You'll probably want something like Masonry. It sets up the columns for you as you require. It does rely on absolute positioning, but that's just about your only easy option. You'll need to tinker with the code a little to make it responsive, I did it on an in-development site here but I can't entirely remember what I did, sorry. Feel free to look through the source code though.
Masonry is pretty quick; below is the basic setup, here are more details.
HTML
<div id="container">
<div class="item">...</div>
<div class="item w2">...</div>
<div class="item">...</div>
...
</div>
JavaScript
var container = document.querySelector('#container');
var msnry = new Masonry( container, {
// options
columnWidth: 200,
itemSelector: '.item'
});
I managed to make the following layout with CSS only: http://jsfiddle.net/hpr2b/7/
.top-center {
width: 55%;
float: left;
margin: 10px 0 10px 25%;
}
.top-left {
float: right;
width: 25%;
margin: 10px 75% 40px -100%;
}
.top-right {
float: right;
width: 20%;
margin: 10px 0 40px 0;
}
.mid-center {
margin: 10px 20% 10px 25%;
clear: left;
}
.mid-left {
float: left;
clear: right;
width: 25%;
margin-top: -20px;
}
.mid-right {
float: right;
clear: right;
width: 20%;
margin-top: -20px;
}
.bottom-center {
margin: 0 20% 10px 25%;
}
I've found a lot of similar questions, and tried out several solutions (including some of the so-called "holy grail" CSS layouts), but they don't quite do what I need.
I have a containing div (a CSS containing block) with id right. Inside it on the left side, I want a fixed-width div (a splitter bar, but it doesn't matter what it's being used for; id splitpane); on the right, filling the rest of the space, another div (id right-box below).
I've tried making the two inner divs display: inline-block (with vertical-align: top), setting the left one to width: 3px, but then there's no way to set the right to have width 100% - 3px. I've also tried using the float: left/margin-left: -100%/margin-left: 3px trick, but it has the same problem: the 100% plus the 3px overflows the parent containing block and causes a scroll bar to pop up. (Of course, it's not the scroll bar per se that's the problem; I could use overflow: hidden to remove it, but then content on the right would be truncated.)
Currently I'm using width: 99.5% for the right div, but that's a terrible hack (and is subject to overflow depending on screen width). It looks a bit like this:
<div id="right"><div id="splitpane"></div><div id="right-box">
...
</div></div>
With CSS as follows (float version, but the inline-block version is similar):
#right {
display: inline-block;
vertical-align: top;
height: 100%;
width: 85%; /* this is part of a larger div */
}
#right-box {
width: 99.5%; /* stupid hack; actually want 100% - 3px for splitter */
height: 100%;
}
#splitpane {
float: left;
width: 3px;
height: 100%;
background: white;
border-left: solid gray 1px;
border-right: solid gray 1px;
cursor: e-resize;
}
Is it even possible to do this? This is for an internal app., so solutions only need to work in Firefox 3 (if they are specific to FF3, though, preferably it's because the solution is standards-compliant but other browsers aren't, not because it's using Firefox-only code).
DIVs are the wrong element type for this since they don't "talk" to each other. You can achieve this easily with a table:
<table style="width:200px">
<tr>
<td id="splitpane" style="width: 3px">...</td>
<td id="rightBox" style="width: 100%">...</td>
<tr>
</table>
The 100% will make the rightBox as wide as possible but within the limits of the table.
This is possible. Because block level elements automatically expand to take up any remaining horizontal space, you can utilise a block level element next to an uncleared floated element with your desired width.
<style type="text/css">
div {
height: 100px;
}
#container {
width: 100%;
}
#left {
background: #FF0;
}
#splitpane {
position: relative;
float: right;
background: #000;
width: 3px;
}
</style>
<div id="container">
<div id="splitpane"></div>
<div id="left"></div>
</div>
See http://jsfiddle.net/georeith/W4YMD/1/
why you didn't use margin-left (since it was float layout) on right box?
so no need to create a splitter div...
#right{
width:200px; /*specify some width*/
}
#rightbox{
float:left;
margin-left: 3px; /*replace the splitter*/
/*margin: 0 3px; /*use this to give left & right splitter*/ */
}
yeah something like that, i hate empty div, it's not semantic and it's like putting a splitter on the "old" table way
If the div #right-box is only going to contain non-floated content it might be an idea to just put the content inside #right instead and let it wrap around the floated #splitpane.