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html+css 常用布局

来源:互联网 收集:自由互联 发布时间:2021-06-13
1.中间固定宽度,两侧自适应 1.1 f lex 布局 !DOCTYPE html html lang="en" head meta charset="UTF-8" titleTitle/title style html,body,div{ height: 100%; } .left { background-color: #ccc; flex:1; } .middle { background-color: #75cc
1.中间固定宽度,两侧自适应 
1.1
flex布局
<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
html,body,div{
height: 100%;
}
.left {
background-color: #ccc;
flex:1;
}

.middle {
background-color: #75cc23;
flex:0 0 400px;
}

.right {
background-color: #cc3b38;
flex:1;
}
.con{
display: flex;
justify-content: center;
}
</style>
</head>
<body>
<div class="con">
<div class="left">

</div>
<div class="middle">

</div>
<div class="right">

</div>
</div>

</body>

//也可以用这个样式
html,body,div{
height: 100%;
}
.left {
background-color: #ccc;
flex-grow:1;
}

.middle {
background-color: #75cc23;
width:400px;
}

.right {
background-color: #cc3b38;
flex-grow:1;
}
.con{
display: flex;
justify-content: center;
}


1.2 calc+float

<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
html,body,div{
height: 100%;
}
.left,.right {
background-color: #ccc;
float: left;
width:calc((100% - 400px) / 2)
}

.middle {
background-color: #75cc23;
width:400px;
float:left;
}

.right {
background-color: #cc3b38;

     }
</style>
</head>
<body>
<div class="con">
<div class="left">

</div>
<div class="middle">

</div>
<div class="right">

</div>
</div>

</body>
</html>

2.两边固定 中间自适应
2.1浮动布局
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>title</title>
<style type="text/css">
.con div{
min-height: 200px;
}
.con .left{
float: left;
width: 300px;
background: #72f5ff;
}
.con .right{
float: right;
width: 300px;
background: #7aff73;
}
.con .middle{
background: #ff2d21;
}

</style>
</head>
<body>

<div class="con">
<div class="left"></div>
<div class="right"></div>
<div class="middle">

</div>
</div>

</body>
</html>
2.2使用绝对定位
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>绝对定位布局</title>
<style type="text/css">
.con div{
position: absolute;
min-height: 200px;
}
.con .left{
left: 0;
width: 300px;
background: red;
}
.con .right{
right: 0;
width: 300px;
background: blue;
}
.con .middle{
left: 300px;
right: 300px;
background: pink;
}

</style>
</head>
<body>

<div class="con">
<div class="left"></div>
<div class="middle">

</div>
<div class="right"></div>
</div>

</body>
</html>
2.3 flex布局
<!DOCTYPE html><html><head>    <meta charset="utf-8" />    <title>flex</title>    <style type="text/css">        .con{            min-height: 200px;            display: flex;        }        .con .left{            width: 300px;            background: red;        }        .con .right{            width: 300px;            background: blue;        }        .con .middle{            flex-grow: 1;            background: #ffa861;        }    </style></head><body><div class="con">    <div class="left"></div>    <div class="middle">    </div>    <div class="right"></div></div></body></html>
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