Develop Reference

How to make insertion into contentEditable paragraph bound by its size?

I need an editable one line paragraph such that the text inserted into it must not overflow its size.
I'm currently using CSS to try to hide the overflow and also to avoid multiple lines (by not displaying the paragraph's children).
However, ideally I need the text inserted into the paragraph to be "cut" as soon as it would overflow.
This is my code so far (also in JSFiddle):
div
{
width: 50vw;
height: 50vh;
margin: 10px auto;
background-color: gray;
}
p
{
position: absolute;
left: 50%;
transform: translateX(-50%);
width: 25%;
background-color: brown;
text-align: center;
white-space: nowrap;
overflow-x: hidden;
}
/* Avoiding multiple lines */
p *
{
display: none;
}
<div>
<p contentEditable="true">
Edit me! Unfortunally I can be overflowed... :(
</p>
</div>

You can use word-break: keep-all; property in this case
div {
width: 50vw;
height: 50vh;
margin: 10px auto;
background-color: gray;
}
p {
position: absolute;
left: 50%;
transform: translateX(-50%);
width: 25%;
background-color: brown;
text-align: center;
word-break: keep-all;
white-space: normal;
}
p * {
display: none;
}
<div>
<p contentEditable="true">
Edit me! Unfortunally I can be overflowed... :(
</p>
</div>

display:inline-block not aligning properly? [duplicate]

I have a div with two images and an h1. All of them need to be vertically aligned within the div, next to each other. One of the images needs to be absolute positioned within the div.
What is the CSS needed for this to work on all common browsers?
<div id="header">
<img src=".." ></img>
<h1>testing...</h1>
<img src="..."></img>
</div>

Wow, this problem is popular. It's based on a misunderstanding in the vertical-align property. This excellent article explains it:
Understanding vertical-align, or "How (Not) To Vertically Center Content" by Gavin Kistner.
“How to center in CSS” is a great web tool which helps to find the necessary CSS centering attributes for different situations.
In a nutshell (and to prevent link rot):
Inline elements (and only inline elements) can be vertically aligned in their context via vertical-align: middle. However, the “context” isn’t the whole parent container height, it’s the height of the text line they’re in. jsfiddle example
For block elements, vertical alignment is harder and strongly depends on the specific situation:
If the inner element can have a fixed height, you can make its position absolute and specify its height, margin-top and top position. jsfiddle example
If the centered element consists of a single line and its parent height is fixed you can simply set the container’s line-height to fill its height. This method is quite versatile in my experience. jsfiddle example
… there are more such special cases.

Now that Flexbox support is increasing, this CSS applied to the containing element would vertically center all contained items (except for those items that specify the alignment themselves, e.g. align-self:start)
.container {
display: flex;
align-items: center;
}
Use the prefixed version if you also need to target Internet Explorer 10, and older (< 4.4 (KitKat)) Android browsers:
.container {
display: -ms-flexbox;
display: -webkit-flex;
display: flex;
-ms-flex-align: center;
-webkit-align-items: center;
-webkit-box-align: center;
align-items: center;
}

I used this very simple code:
div.ext-box { display: table; width:100%;}
div.int-box { display: table-cell; vertical-align: middle; }
<div class="ext-box">
<div class="int-box">
<h2>Some txt</h2>
<p>bla bla bla</p>
</div>
</div>
Obviously, whether you use a .class or an #id, the result won't change.

.outer {
display: flex;
align-items: center;
justify-content: center;
}

It worked for me:
.vcontainer {
min-height: 10em;
display: table-cell;
vertical-align: middle;
}

Vertically and horizontally align element
Use either of these. The result would be the same:
Bootstrap 4
CSS3
1. Bootstrap 4.3+
For vertical alignment: d-flex align-items-center
For horizontal alignment: d-flex justify-content-center
For vertical and horizontal alignment: d-flex align-items-center justify-content-center
.container {
height: 180px;
width:100%;
background-color: blueviolet;
}
.container > div {
background-color: white;
padding: 1rem;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
rel="stylesheet"/>
<div class="d-flex align-items-center justify-content-center container">
<div>I am in Center</div>
</div>
2. CSS 3
.container {
height: 180px;
width:100%;
background-color: blueviolet;
}
.container > div {
background-color: white;
padding: 1rem;
}
.center {
display: flex;
align-items: center;
justify-content: center;
}
<div class="container center">
<div>I am in Center</div>
</div>

A technique from a friend of mine:
div:before {content:" "; display:inline-block; height:100%; vertical-align:middle;}
div p {display:inline-block;}
<div style="height:100px; border:1px solid;">
<p style="border:1px dotted;">I'm vertically centered.</p>
</div>
Demo here.

To position block elements to the center (works in Internet Explorer 9 and above), it needs a wrapper div:
.vcontainer {
position: relative;
top: 50%;
transform: translateY(-50%);
-webkit-transform: translateY(-50%);
}

Use this formula, and it will work always without cracks:
#outer {height: 400px; overflow: hidden; position: relative;}
#outer[id] {display: table; position: static;}
#middle {position: absolute; top: 50%;} /* For explorer only*/
#middle[id] {display: table-cell; vertical-align: middle; width: 100%;}
#inner {position: relative; top: -50%} /* For explorer only */
/* Optional: #inner[id] {position: static;} */
<div id="outer">
<div id="middle">
<div id="inner">
any text
any height
any content, for example generated from DB
everything is vertically centered
</div>
</div>
</div>

All of them need to be vertically aligned within the div
Aligned how? Tops of the images aligned with the top of the text?
One of the images needs to be absolute positioned within the div.
Absolutely positioned relative to the DIV? Perhaps you could sketch out what you're looking for...?
fd has described the steps for absolute positioning, as well as adjusting the display of the H1 element such that images will appear inline with it. To that, i'll add that you can align the images by use of the vertical-align style:
#header h1 { display: inline; }
#header img { vertical-align: middle; }
...this would put the header and images together, with top edges aligned. Other alignment options exist; see the documentation. You might also find it beneficial to drop the DIV and move the images inside the H1 element - this provides semantic value to the container, and removes the need to adjust the display of the H1:
<h1 id=header">
<img src=".." ></img>
testing...
<img src="..."></img>
</h1>

Almost all methods needs to specify the height, but often we don't have any heights.
So here is a CSS 3 three-line trick that doesn't require to know the height.
.element {
position: relative;
top: 50%;
transform: translateY(-50%);
}
It's supported even in IE9.
with its vendor prefixes:
.element {
position: relative;
top: 50%;
-webkit-transform: translateY(-50%);
-ms-transform: translateY(-50%);
transform: translateY(-50%);
}
Source: Vertical align anything with just 3 lines of CSS

Three ways to make a center child div in a parent div
Absolute positioning method
Flexbox method
Transform/translate method
Demo
/* Absolute Positioning Method */
.parent1 {
background: darkcyan;
width: 200px;
height: 200px;
position: relative;
}
.child1 {
background: white;
height: 30px;
width: 30px;
position: absolute;
top: 50%;
left: 50%;
margin: -15px;
}
/* Flexbox Method */
.parent2 {
display: flex;
justify-content: center;
align-items: center;
background: darkcyan;
height: 200px;
width: 200px;
}
.child2 {
background: white;
height: 30px;
width: 30px;
}
/* Transform/Translate Method */
.parent3 {
position: relative;
height: 200px;
width: 200px;
background: darkcyan;
}
.child3 {
background: white;
height: 30px;
width: 30px;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
<div class="parent1">
<div class="child1"></div>
</div>
<hr />
<div class="parent2">
<div class="child2"></div>
</div>
<hr />
<div class="parent3">
<div class="child3"></div>
</div>

My trick is to put a table inside the div with one row and one column, set 100% of width and height, and the property vertical-align:middle:
<div>
<table style="width:100%; height:100%;">
<tr>
<td style="vertical-align:middle;">
BUTTON TEXT
</td>
</tr>
</table>
</div>
Fiddle:
http://jsfiddle.net/joan16v/sbqjnn9q/

Using display flex, first you need to wrap the container of the item that you want to align:
<div class="outdiv">
<div class="indiv">
<span>test1</span>
<span>test2</span>
</div>
</div>
Then apply the following CSS content to wrap div or outdiv in my example:
.outdiv {
display: flex;
justify-content: center;
align-items: center;
}

Using CSS to vertical center, you can let the outer containers act like a table, and the content as a table cell. In this format your objects will stay centered. :)
I nested multiple objects in JSFiddle for an example, but the core idea is like this:
HTML
<div class="circle">
<div class="content">
Some text
</div>
</div>
CSS
.circle {
/* Act as a table so we can center vertically its child */
display: table;
/* Set dimensions */
height: 200px;
width: 200px;
/* Horizontal center text */
text-align: center;
/* Create a red circle */
border-radius: 100%;
background: red;
}
.content {
/* Act as a table cell */
display: table-cell;
/* And now we can vertically center! */
vertical-align: middle;
/* Some basic markup */
font-size: 30px;
font-weight: bold;
color: white;
}
The multiple objects example:
HTML
<div class="container">
<div class="content">
<div class="centerhoriz">
<div class="circle">
<div class="content">
Some text
</div><!-- content -->
</div><!-- circle -->
<div class="square">
<div class="content">
<div id="smallcircle"></div>
</div><!-- content -->
</div><!-- square -->
</div><!-- center-horiz -->
</div><!-- content -->
</div><!-- container -->
CSS
.container {
display: table;
height: 500px;
width: 300px;
text-align: center;
background: lightblue;
}
.centerhoriz {
display: inline-block;
}
.circle {
display: table;
height: 200px;
width: 200px;
text-align: center;
background: red;
border-radius: 100%;
margin: 10px;
}
.square {
display: table;
height: 200px;
width: 200px;
text-align: center;
background: blue;
margin: 10px;
}
.content {
display: table-cell;
vertical-align: middle;
font-size: 30px;
font-weight: bold;
color: white;
}
#smallcircle {
display: inline-block;
height: 50px;
width: 50px;
background: green;
border-radius: 100%;
}
Result
https://jsfiddle.net/martjemeyer/ybs032uc/1/

I have found a new workaround to vertically align multiple text-lines in a div using CSS 3 (and I am also using bootstrap v3 grid system to beautify the UI), which is as below:
.immediate-parent-of-text-containing-div {
height: 50px; /* Or any fixed height that suits you. */
}
.text-containing-div {
display: inline-grid;
align-items: center;
text-align: center;
height: 100%;
}
As per my understanding, the immediate parent of text containing element must have some height.

We may use a CSS function calculation to calculate the size of the element and then position the child element accordingly.
Example HTML:
<div class="box">
<span>Some Text</span>
</div>
And CSS:
.box {
display: block;
background: #60D3E8;
position: relative;
width: 300px;
height: 200px;
text-align: center;
}
.box span {
font: bold 20px/20px 'source code pro', sans-serif;
position: absolute;
left: 0;
right: 0;
top: calc(50% - 10px);
}
a {
color: white;
text-decoration: none;
}
Demo created here: https://jsfiddle.net/xnjq1t22/
This solution works well with responsive div height and width as well.
Note: The calc function is not tested for compatiblity with old browsers.

Using only a Bootstrap class:
div: class="container d-flex"
element inside div: class="m-auto"
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.3/css/bootstrap.min.css" crossorigin="anonymous">
<div class="container d-flex mt-5" style="height:110px; background-color: #333;">
<h2 class="m-auto">H➲VER➾M⇡ND</h2>
</div>

By default h1 is a block element and will render on the line after the first img, and will cause the second img to appear on the line following the block.
To stop this from occurring you can set the h1 to have inline flow behaviour:
#header > h1 { display: inline; }
As for absolutely positioning the img inside the div, you need to set the containing div to have a "known size" before this will work properly. In my experience, you also need to change the position attribute away from the default - position: relative works for me:
#header { position: relative; width: 20em; height: 20em; }
#img-for-abs-positioning { position: absolute; top: 0; left: 0; }
If you can get that to work, you might want to try progressively removing the height, width, position attributes from div.header to get the minimal required attributes to get the effect you want.
UPDATE:
Here is a complete example that works on Firefox 3:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>Example of vertical positioning inside a div</title>
<style type="text/css">
#header > h1 { display: inline; }
#header { border: solid 1px red;
position: relative; }
#img-for-abs-positioning { position: absolute;
bottom: -1em; right: 2em; }
</style>
</head>
<body>
<div id="header">
<img src="#" alt="Image 1" width="40" height="40" />
<h1>Header</h1>
<img src="#" alt="Image 2" width="40" height="40"
id="img-for-abs-positioning" />
</div>
</body>
</html>

My new favorite way to do it is with a CSS grid:
/* technique */
.wrapper {
display: inline-grid;
grid-auto-flow: column;
align-items: center;
justify-content: center;
}
/* visual emphasis */
.wrapper {
border: 1px solid red;
height: 180px;
width: 400px;
}
img {
width: 100px;
height: 80px;
background: #fafafa;
}
img:nth-child(2) {
height: 120px;
}
<div class="wrapper">
<img src="https://source.unsplash.com/random/100x80/?bear">
<img src="https://source.unsplash.com/random/100x120/?lion">
<img src="https://source.unsplash.com/random/100x80/?tiger">
</div>

Just use a one-cell table inside the div! Just set the cell and table height and with to 100% and you can use the vertical-align.
A one-cell table inside the div handles the vertical-align and is backward compatible back to the Stone Age!

For me, it worked this way:
<div style="width:70px; height:68px; float:right; display: table-cell; line-height: 68px">
Login
</div>
The "a" element converted to a button, using Bootstrap classes, and it is now vertically centered inside an outer "div".

I have been using the following solution (with no positioning and no line height) since over a year, it works with Internet Explorer 7 and Internet Explorer 8 as well.
<style>
.outer {
font-size: 0;
width: 400px;
height: 400px;
background: orange;
text-align: center;
display: inline-block;
}
.outer .emptyDiv {
height: 100%;
background: orange;
visibility: collapse;
}
.outer .inner {
padding: 10px;
background: red;
font: bold 12px Arial;
}
.verticalCenter {
display: inline-block;
*display: inline;
zoom: 1;
vertical-align: middle;
}
</style>
<div class="outer">
<div class="emptyDiv verticalCenter"></div>
<div class="inner verticalCenter">
<p>Line 1</p>
<p>Line 2</p>
</div>
</div>

This is my personal solution for an i element inside a div.
JSFiddle Example
HTML
<div class="circle">
<i class="fa fa-plus icon">
</i></div>
CSS
.circle {
border-radius: 50%;
color: blue;
background-color: red;
height:100px;
width:100px;
text-align: center;
line-height: 100px;
}
.icon {
font-size: 50px;
vertical-align: middle;
}

Just this:
<div>
<table style="width: 100%; height: 100%">
<tr>
<td style="width: 100%; height: 100%; vertical-align: middle;">
What ever you want vertically-aligned
</td>
</tr>
</table>
</div>
A one-cell table inside the div handles the vertical-align and is backward compatible back to the Stone Age!

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<style type="text/css">
#style_center { position:relative; top:50%; left:50%; }
#style_center_absolute { position:absolute; top:50px; left:50px; }
<!--#style_center { position:relative; top:50%; left:50%; height:50px; margin-top:-25px; }-->
</style>
</head>
<body>
<div style="height:200px; width:200px; background:#00FF00">
<div id="style_center">+</div>
</div>
</body>
</html>

Here is just another (responsive) approach:
html,
body {
height: 100%;
}
body {
margin: 0;
}
.table {
display: table;
width: auto;
table-layout:auto;
height: 100%;
}
.table:nth-child(even) {
background: #a9edc3;
}
.table:nth-child(odd) {
background: #eda9ce;
}
.tr {
display: table-row;
}
.td {
display: table-cell;
width: 50%;
vertical-align: middle;
}
http://jsfiddle.net/herrfischerhamburg/JcVxz/

<div id="header" style="display: table-cell; vertical-align:middle;">
...
or CSS
.someClass
{
display: table-cell;
vertical-align:middle;
}
Browser Coverage

Header for website bleeds over 100% width [duplicate]

This question already has answers here:
How to make an element width: 100% minus padding?
(15 answers)
Closed 2 years ago.
This is my CSS for the header:
#header {
font-size: 3rem;
width: 100%;
height: 4.5em;
display: flex;
align-items: center;
padding-left: 1em;
}
As you can see, it is set to 100% width.
On the website however, it shows up like this, with a horizontal scroll bar at the bottom:
For some reason, the header extends past the html tag. overflow: hidden does nothing. 100vw doesn't change anything either. My other divs' width is also 100%. Not getting any errors in the console. Here is my html:
<body onload="setBgColors()"> <!-- function that sets certain background colors using Colorthief is called on load -->
<div id='header'>
<div class='flag-container'><img src="images/tree.png" alt="Flag" id="flag"></div>
<h1 id="title">Fussajle</h1>
<button id='edit-button'>Edit</button>
</div>
<ul class="tabs">
<li data-tab-target="#overview">
<div class="tab-button" id='default-button'>
Overview
</div>
</li>
<li data-tab-target="#learn">
<div class="tab-button">
Learn
</div>
</li>
<li data-tab-target="#more">
<div class="tab-button">
More
</div>
</li>
</ul>
...
</body>
The rest of my CSS:
.flag-container {
width: calc(2.75em + 10px);
height: calc(2.75em + 10px);
background-color: #fcfcfc;
border-radius: 50%;
}
#flag {
width: 2.75em;
height: 2.75em;
object-fit: cover;
border-radius: 50%;
border: 5px solid #ffffff;
}
#title {
margin-left: 1em;
}
#edit-button {
font-size: 1.5rem;
width: 3em;
height: 2em;
border-radius: 5px;
margin-left: calc(100vw - 33em); /* for edit button to be always on the right side of the screen relative to the vw*/
}
/* tabs */
.tabs {
width: 100%;
height: 3.5rem;
display: flex;
}
.tabs li {
width: calc(100% / 3);
height: 100%;
}
.tabs div {
font-size: 1.5rem;
width: 100%;
height: 100%;
display: flex;
justify-content: center;
align-items: center;
}
Help would be appreciated.

The problem seems to be with the padding-left property on the header.
#header {
font-size: 3rem;
width: 100%;
height: 4.5em;
display: flex;
align-items: center;
padding-left: 1em; /* Here is the issue */
box-sizing:border-box; /* Try this solution */
}
You can make sure box-sizing:border-box is set either on header or on all the elements.
From MDN:
The box-sizing CSS property sets how the total width and height of an element is calculated. [See More]
You can also set box-sizing:border-box on all the elements by using basic reset at the top of your CSS file:
*{
margin:0;
padding:0;
box-sizing:border-box;
}

Align a div and two images inside of a DIV hortizonally

I want to align two images and a DIV. The DIV thats a rounded box keeps ending up beneath the two images.
Here's my HTML/CSS:
.main {
position: absolute;
margin: auto;
top: 0;
right: 0;
bottom: 0;
left: 0;
width: 600px;
height: 110px;
}
.one {
float: right;
height: 100px;
}
.two {
height: 100px;
}
.box {
position: absolute;
height: 50px;
width: 50px;
}
.rounded {
border-radius: 10px;
border-color: #FFF;
border: 5px solid white;
}
<div id="main" class="main">
<div id="one" class="one">
</div>
<div id="two" class="two"><img src="[![apple][1]][1]" width="100" height="76" /> <img src="[![titleofpage][1]][1]" width="309" height="61" />
<div class="box rounded"></div>
</div>
</div>
How can I align them all in a straight line in this centered DIV in the middle of the page?

You can try out flexbox:
.flex-container-center {
display: flex;
align-items: center; /* this is what you need :) */
justify-content: center;
}
<div class="flex-container-center">
<img src="https://via.placeholder.com/200x200" />
<img src="https://via.placeholder.com/100x100" />
<img src="https://via.placeholder.com/200x50" />
</div>
Also, here's a working example and my favorite guide on flexbox :)

Add display: flex and justify-content: center to .two class;
.two {
display: flex;
justify-content: center;
height: 100px;
}
When using display: flex, there is a main-axis and cross-axis and you can set the main axis with flex-direction: row or flex-direction: column. The default is flex-direction: row without calling it. This means in the above example the main-axis = row and cross-axis = column.
When centering items using flex box you have two options:
align-items: center
justify-content: center
align-items controls the cross axis and justify-content controls the main axis.
In your example the main axis is row because the flex-direction wasn't called, so it used the default row. To center the items on the horizontal axis, you have to use justify-content, which uses the main axis (flex-direction) --> row

I tweaked the CSS to use grid view, removed the absolute positions and floats. Added borders so I could see things :)
.main{
position: block;
margin: 0 auto;
width: 600px;
height: 110px;
}
.one {
border: 5px solid blue;
height: 100px;
}
.two {
display: grid;
grid-template-columns: repeat(3, 30%);
height: 100px;
border: 5px solid yellow;
}
.box {
height:50px;
width:50px;
}
.rounded {
border-radius: 10px;
border-color:#FFF;
border: 5px solid red;
}

How to position text and Div on top of eachother and align them in center?

So I can't figure this out.
I'm trying to get a red vertical box to display in middle of page. I've set the div's margin to auto.
And then there's another div that holds a centered text.
Setting margin auto on both.
They are both stacking on top of eachother fine in middle of page.
However I want it to be responsive to all heights. Right now it's just responsive to the x-axis and not the height.
HTML & CSS:
.parentDiv {
position: relative;
width: 250px;
height: 450px;
margin: auto;
}
#RedBox {
width: 250px;
height: 450px;
background-color: #FF0000;
margin: auto;
}
#CSText {
position: absolute;
top: 45%;
width: 250px;
color: black;
text-align: center;
}
<div class="parentDiv" style="margin-top: auto;">
<div id="CSText" class="TextAlignCenter">
</div>
<div id="RedBox">
</div>
</div>

flexbox would be a great solution to this:
.container {
height: 100vh;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}
.red-box {
background-color: red;
padding: 100px;
color: white;
}
<div class="container">
<div class="red-box">text</div>
</div>

I did this for you.
https://jsfiddle.net/95ssv6q1/
HTML
<div class="parentDiv">
<div class="inner">
<div id="RedBox">
</div>
</div>
</div>
CSS
.parentDiv {
display:table;
width: 100%;
height: 100%;
position: absolute;
}
.inner{
display: table-cell;
vertical-align:middle;
}
#RedBox {
width: 250px;
height: 450px;
background-color: #FF0000;
margin: auto;
}