CSS - Equal Height Columns?

Question

In CSS, I can do something like this:

But I\'ve no idea how to change that to something like:

---

Is this possible with CSS?

Answer 1

Grid

Nowadays, I prefer grid because it allows keeping all layout declarations on parent and gives you equal width columns by default:

.row {
  display: grid;
  grid-auto-flow: column;
  gap: 5%;
}

.col {
  border: solid;
}

<div class="row">
  <div class="col">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</div>
  <div class="col">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.</div>
  <div class="col">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo.</div>
</div>

Flexbox

Use Flexbox if you want children to control column width:

.row {
  display: flex;
  justify-content: space-between;
}

.col {
  flex-basis: 30%;
  box-sizing: border-box;
  border: solid;
}

<div class="row">
  <div class="col">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</div>
  <div class="col">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.</div>
  <div class="col">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo.</div>
</div>

Answer 2

Here is an example I just wrote in SASS with changeable column-gap and column amount (variables):

CSS:

.fauxer * {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box; }

.fauxer {
  overflow: hidden; }

.fauxer > div {
  display: table;
  border-spacing: 20px;
  margin: -20px auto -20px -20px;
  width: -webkit-calc(100% + 40px);
  width: -moz-calc(100% + 40px);
  width: calc(100% + 40px); }

.fauxer > div > div {
  display: table-row; }

.fauxer > div > div > div {
  display: table-cell;
  width: 20%;
  padding: 20px;
  border: thin solid #000; }

<div class="fauxer">
                <div>
                    <div>
                        <div>
                            Lorem column 1
                        </div>
                        <div>
                            Lorem ipsum column 2 dolor sit amet, consetetur sadipscing elitr, 
                            sed diam nonumy eirmod tempor invidunt ut labore et 
                            dolore magna aliquyam erat, sed diam voluptua.
                        </div>
                        <div>
                            Lorem column 3
                        </div>
                        <div>
                            Lorem column 4
                        </div>
                        <div>
                            Lorem column 5
                        </div>
                    </div>
                </div>
            </div>

Note: I only found the time to test it in some new browsers. Please test it well before you will use it :)

The editable example in SCSS you can get here: JSfiddle

Answer 3

Use Flexbox to create equal height columns

* {box-sizing: border-box;}

/* Style Row */
.row {
  display: -webkit-flex;
  -webkit-flex-wrap: wrap;
  display: flex;
  flex-wrap: wrap;
}

/* Make the columns stack on top of each other */
.row > .column {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
}

/* When Screen width is 400px or more make the columns stack next to each other*/
@media screen and (min-width: 400px) {
  .row > .column {    
    flex: 0 0 33.3333%;
    max-width: 33.3333%;
  }
}

<div class="row">
  <!-- First Column -->
  <div class="column" style="background-color: #dc3545;">
    <h2>Column 1</h2>
    <p>Some Text...</p>
    <p>Some Text...</p>
  </div>
  <!-- Second Column -->
  <div class="column" style="background-color: #ffc107;">
    <h2>Column 2</h2>
    <p>Some Text...</p>
    <p>Some Text...</p>
    <p>Some Text...</p>    
    <p>Some Text...</p>
    <p>Some Text...</p>
    <p>Some Text...</p>
    <p>Some Text...</p>
  </div>
  <!-- Third Column -->
  <div class="column" style="background-color: #007eff;">
    <h2>Column 3</h2>
    <p>Some Text...</p>
    <p>Some Text...</p>
    <p>Some Text...</p>    
  </div>
</div>

Answer 4

Modern way to do it: CSS Grid.

HTML:

<div class="container">
  <div class="element">{...}</div>
  <div class="element">{...}</div>
  <div class="element">{...}</div>
</div>

CSS:

.container {
  display: grid;
  grid-gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.element {
  border: 2px solid #000;
}

Live example is here.

repeat(auto-fit, minmax(200px, 1fr)); part sets columns width. Every column takes 1 fraction of available space, but can't go less than 200px. Instead of shrinking below 200px it wraps below, so it's even responsive. You can also have any number of columns, not just 3. They'll all fit nicely.

If you need exactly 3 columns, use grid-template-columns: repeat(3, 1fr); instead. You can still have more elements, they will wrap, be responsive, but always be placed in 3 column layout.

More on CSS Grid on MDN or css-tricks.

It's clean, readable, maintainable, flexible and also that simple to use!

Answer 5

Yes.

Here is the completed CSS the article uses. It is well worth reading the entire article, as the author goes step by step into what you need to make this work.

#container3 {
    float:left;
    width:100%;
    background:green;
    overflow:hidden;
    position:relative;
}
#container2 {
    float:left;
    width:100%;
    background:yellow;
    position:relative;
    right:30%;
}
#container1 {
    float:left;
    width:100%;
    background:red;
    position:relative;
    right:40%;
}
#col1 {
    float:left;
    width:26%;
    position:relative;
    left:72%;
    overflow:hidden;
}
#col2 {
    float:left;
    width:36%;
    position:relative;
    left:76%;
    overflow:hidden;
}
#col3 {
    float:left;
    width:26%;
    position:relative;
    left:80%;
    overflow:hidden;
}

This isn't the only method for doing it, but this is probably the most elegant method I've encountered.

There is another site that is done completely in this manner, viewing the source will allow you to see how they did it.