Analysis of the causes and problems caused by flat floating in css
The content of this article is about the analysis of the causes of flat floating in CSS and the problems it brings. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
The causes and side effects of flaot floating
The four parameters in float
left, right, none, inherit
The reasons for float
After using float, the element will break away from the standard document flow. (The standard document flow is to arrange and display different element types, such as block elements and line elements according to their respective characteristics. Although the attributes are different, they are all arranged in the order from top to bottom and left to right)
float Side effects of floating
Two block-level elements will be overwritten by floating elements
<style type="text/css">
.box{
border: 4px solid #000000;
width: 200px;
height: 200px;
display: inline-block;
}
.itemSmall_1{
background-color: chartreuse;
width: 40px;
height: 40px;
border: 2px solid #000000;
/* float: left; */
}
.itemSmall_2{
background-color: chartreuse;
width: 40px;
height: 40px;
border: 2px solid #000000;
float: left;
}
.itemBig{
background-color: blue;
width: 150px;
height: 150px;
border: 2px solid #000000;
}
</style><body>
<div class="box">
<div class="itemSmall_1">
</div>
<div class="itemBig">
</div>
</div>
<div class="box">
<div class="itemSmall_2">
</div>
<div class="itemBig">
</div>
</div>
</body> *A block element and an inline element. Inline elements such as text will float around the floated element, leaving space for the floated element. 
<style type="text/css">
.box{
border: 4px solid #000000;
width: 200px;
height: 200px;
display: inline-block;
vertical-align: top;
}
.itemSmall_1{
background-color: chartreuse;
width: 40px;
height: 40px;
border: 2px solid #000000;
/* float: left; */
}
.itemSmall_2{
background-color: chartreuse;
width: 40px;
height: 40px;
border: 2px solid #000000;
float: left;
}
.itemBig{
background-color: blue;
width: 150px;
height: 150px;
border: 2px solid #000000;
}
</style>
<body>
<div class="box">
<div class="itemSmall_1">
</div>
<div class="itemBig">
</div>
</div>
<div class="box">
<div class="itemSmall_2">
</div>
行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素行内元素 </div>
</body>*Two block-level elements floated, and the parent element collapsed
<style type="text/css">
.box{
border: 4px solid #000000;
float: left;
}
.itemSmall_2{
background-color: chartreuse;
width: 40px;
height: 40px;
border: 2px solid #000000;
float: left;
}
.itemBig2{
background-color: blue;
width: 150px;
height: 150px;
border: 2px solid #000000;
float: left;
}
</style>
<body>
<div class="box">
<div class="itemSmall_2">
</div>
<div class="itemBig2">
</div>
</div>
</body>Related recommendations:
Detailed explanation of the reasons why css parent class clears floats
Detailed explanation of floats in css and three methods of clearing floats
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