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Example of vertically centering a div within another div

高洛峰

Mar 06, 2017 pm 02:35 PM

Basic knowledge: vertically center a div inside another div

Method 1:

<span style="text-decoration: none;">.parent {<br>            width:800px;<br>            height:500px;<br>            border:2px solid #000;<br>            position:relative;<br> }<br> .child {<br>             width:200px;<br>             height:200px;<br>             margin: auto;  <br>             position: absolute;  <br>             top: 0; left: 0; bottom: 0; right: 0; <br>             background-color: red;<br>}<br></span>

Method two:

<span style="text-decoration: none;">.parent {<br>             width:800px;<br>             height:500px;<br>             border:2px solid #000;<br>             display:table-cell;<br>             vertical-align:middle;<br>             text-align: center;<br>         }<br>  .child {<br>             width:200px;<br>             height:200px;<br>             display:inline-block;<br>             background-color: red;<br>         }<br></span>

Method three:

<span style="text-decoration: none;">.parent {<br>            width:800px;<br>            height:500px;<br>            border:2px solid #000;<br>            display:flex;<br>            justify-content:center;<br>           align-items:center;<br>        }<br> .child {<br>            width:200px;<br>            height:200px;<br>            background-color: red;<br>        }<br></span>

Method four:

<span style="text-decoration: none;">.parent {<br>             width:800px;<br>             height:500px;<br>             border:2px solid #000;<br>             position:relative;<br>        }<br> .child {<br>             width:300px;<br>             height:200px;<br>             margin:auto;<br>             position:absolute;/*设定水平和垂直偏移父元素的50%，再根据实际长度将子元素上左挪回一半大小*/<br>            left:50%;<br>            top:50%;<br>            margin-left: -150px;<br>            margin-top:-100px;<br>            background-color: red;<br>        }<br></span>

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