HTML-CSS: Clearfix

Last update on May 28 2022 07:25:55 (UTC/GMT +8 hours)

HTML-CSS : Exercise-17 with Solution

Using HTML, CSS ensures that an element self-clears its children.

Use the :after pseudo-element and apply content: '' to allow it to affect layout.
Use clear: both to make the element clear past both left and right floats.
For this technique to work properly, make sure there are no non-floating children in the container and that there are no tall floats before the clearfixed container but in the same formatting context (e.g. floated columns).
Note: This is only useful if you are using float to build layouts. Consider using a more modern approach, such as the flexbox or grid layout.

HTML Code:

<!--License: https://bit.ly/3GjrtVF-->
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Using HTML, CSS ensures that an element self-clears its children</title>
</head>
<body>
<div class="clearfix">
  <div class="floated">1st Item </div>
  <div class="floated">2nd Item </div>
  <div class="floated">3rd Item </div>
</div>
</body>
</html>

CSS Code:

<style> 
.clearfix:after {
  content: '';
  display: block;
  clear: both;
}

.floated {
  float: left;
  padding: 4px;
}
</style>

HTML-CSS Editor:

See the Pen html-css-practical-exercises by w3resource (@w3resource) on CodePen.

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HTML-CSS: Tips of the Day

What is the difference between id and class in CSS, and when should I use them?

Example:

<div id="header_id" class="header_class">
Text
</div>

#header_id {font-color:#fff}
.header_class {font-color:#000}

(Note that CSS uses the prefix # for IDs and . for Classes.)

However color was an HTML 4.01 <font> tag attribute deprecated in HTML 5. In CSS there is no "font-color", the style is color so the above should read:

Example:

<div id="header_id" class="header_class">
Text
</div>

#header_id {color:#fff}
.header_class {color:#000}

The text would be white.

Ref: https://bit.ly/39Stv4P