Remove the meaning of floating

Clearing float means that in web page layout, when an element is set with a floating attribute, surrounding elements will be affected, which may lead to layout confusion or overwriting. To solve this problem, we need to use some tricks to clean up the effect of floats.

Usually, floating elements will cause their parent elements to collapse, the height cannot be calculated normally, and their sibling elements may be covered or misplaced. At this time, we need to clear the float and return the element to its normal layout.

Common techniques for clearing floats include the following:

1. Use a fixed-height non-floating empty tag to clear floats, such as adding an empty div tag after the floating element, and Set the clear: both; attribute for this tag. This allows the parent element to recalculate its height and clear the effects of floating.

<div class="clearfix"></div>

<style>
.clearfix {
  clear: both;
}
</style>

2. Use the overflow: hidden; attribute to clear the float, and set the overflow: hidden; attribute to the parent element of the floating element to allow the parent The element automatically expands in height to contain the floated element.

<div class="parent">
  <div class="child"></div>
  <div class="child"></div>
</div>

<style>
.parent {
  overflow: hidden;
}

.child {
  float: left;
}
</style>

3. Use pseudo-elements ::after To clear floating, set the following style to the parent element of the floating element, and clear the effect of floating by adding a pseudo-element.

<div class="parent">
  <div class="child"></div>
  <div class="child"></div>
</div>

<style>
.parent::after {
  content: "";
  display: table;
  clear: both;
}

.child {
  float: left;
}
</style>

These are commonly used methods to clear floats. You can choose the appropriate method to clear the impact of floats according to specific needs.

Clearing floats is a very important part of web page layout, which can ensure the stability and readability of the layout. In actual development, it is crucial to choose the appropriate floating clearing method according to different situations, which can greatly improve the display effect and user experience of the web page.

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