After the child element floats, the parent element is highly adaptive

One, under normal circumstances, that is, without any floating style, etc.

Setting the parent element's height to Aotu or 100% or not, the parent element automatically adjusts its height based on the height of the child element.

Chestnuts

<!--HTML code -<DivID= "Wrap">    <imgsrc= "./1.png"alt= "logo"/>    <DivID= "Content"></Div></Div>

CSS Styles

#wrap {            background:pink;} #content {            width:150px;            height:50px;            Background:greenyellow;} img{            width:100px;            height:100px;}

Display as:

Second, when the child element is set to float, the height of the parent element will not automatically adapt to the floating child elements.

For example, add a floating style to the above chestnut img: float:left, display effect

Therefore, in order to allow the height of the parent element to automatically adapt to the floating child elements, there are many methods, I commonly used 2 kinds: 1. Set the Overflow:hidden for the parent element, while the height is not set or 100% or auto;

effect, the height of the parent element wrap has already contained 2 sub-elements: floating img and non-floating green div:

Code:

HTML code:

<id= "wrap">    <src= "./1.png "  alt=" logo "/>    <id=" Content "></div></div>

CSS style code:

        #wrap {            background:pink;                       Overflow:hidden;        }        #content {            width:150px;            height:50px;            Background:greenyellow;                   }        img{            width:100px;            height:100px;            Float:left;        }

2, the parent element of the bottom of a new label, set Clear:both;

The effect is ditto, no

HTML code:

<DivID= "Wrap">    <imgsrc= "./1.png"alt= "logo"/>    <DivID= "Content"></Div>    <Divclass= "Clear"></Div></Div>

CSS style code:

#wrap {            background:pink;             } #content {            width:150px;            height:50px;            Background:greenyellow;} img{            width:100px;            height:100px;            Float:left;}. clear{            clear:both;//Key Code}

After the child element floats, the parent element is highly adaptive