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Mis à jour le 13/03/2023

Float elements

Another very common legacy way of creating layouts that you might see in older codebases involves floats. The float property in CSS was originally created so that developers could float text around images, like in the following example where an image is floated to the left of text:

asdf

Floats quickly took on lives of their own, though. Developers started using them to float anything left or right; not just images in text, as originally expected.

Before the advent of Flexbox and CSS Grid, though, you would've likely created your elements and then floated them around each other to achieve your desired effect, like a three-column layout or a sidebar on the right side of the page.

Take three simple divs, each of which has some basic styling just for aesthetic purposes:

HTML

<div>1</div>
<div>2</div>
<div>3</div>

CSS

div {
font-family: Futura;
font-size: 2em;
background-color: #ff4c65;
color: white;
width: 200px;
height: 200px;
border-radius: 3px;
margin: 10px;
text-align: center;
}

Ordinarily, they divs will stack on top of one another because they're block-level elements:

Divs stacking upon one another (normal behavior)
Divs stacking upon one another (normal behavior)

You can float them up next to each other, though, using the  float  property. Its value can be either  right  or  left . Let's float them to the left first:

div {
float: left;
}

Divs floated left
Divs floated left (so they no longer stack)

This means that each element will be floated to the left, either to the left edge of its containing element or next to its neighboring element.

You can also float elements to the right:

div {
float: right;
}

asdf
Divs floated right (so they no longer stack)

You can get very nuanced with your floats, especially if you're floating every single element on your page in order to create a precise layout. Since creating layouts this way is seen as outdated, we won't explore the use of floats to create layouts in more detail.

Recap

  • Floats used to be applied to construct layouts.

  • Only use floats to wrap text around images , as they were first intended to do!

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