三列显示

2021-12-12  本文已影响0人  如雨随行2020

两列固定宽度,第三列居中显示
注:虽然css里面已经规定了body的margin和padding为0,但似乎body还是有margin-top:8px;
margin-left/margin-right:10px

html:

<html>
    <head>
        <title>两列</title>
        <link rel = "stylesheet" type="text/css" href = "layout.css">
    </head>
    <body>
        <div id ="left"></div>
        <div id="center"></div>
        <div id="right"></div>
    </body>
</html>


layout.css

#left{
    background-color:#cccccc;
    border:2px solid#333333;
    width:100px;
    height:500px;
    position:absolute;
    top:8px;left:0px;
}
#right{
    background-color:lightgreen;
    border:2px solid#333333;
    width:100px;
    height:500px;
    position:absolute;
    top:8px;right:0px;
}
#center {
    background-color:red;
    border:2px solid#333333;
    height:500px;
    margin-top:0px;
    margin-left:96px;
    margin-right:96px;
}
#body{margin:0px;padding:0px;}

ps:找到问题了,原来的css只对body进行处理,没有对html进行处理

#left{
    background-color:#cccccc;
    border:2px solid#333333;
    width:100px;
    height:500px;
    position:absolute;
    top:0px;left:0px;
}
#right{
    background-color:lightgreen;
    border:2px solid#333333;
    width:100px;
    height:500px;
    position:absolute;
    top:0px;right:0px;
}
#center {
    background-color:red;
    border:2px solid#333333;
    height:500px;
    margin-top:0px;
    margin-left:104px;
    margin-right:104px;
}
html,body{margin:0px;padding:0px;}
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