1. The Holy Grail Layout
<!DOCTYPE html>
<html>
<head>
<title>Holy Grail Layout</title>
<meta charset="utf-8">
<style type="text/css">
/*Holy Grail layout*/
.container{
/* Reserve space for left and right boxes */
padding: 0 300px 0 200px;
}
.left,.middle,.right{
min-height: 130px;
float: left;
position: relative;
}
.left{
background: green;
width: 200px;
/*Negative margins move the left and right boxes to the same line as the middle box, -100% means move the size of one line to the left*/
margin-left: -100%;
/*Negative values move in the opposite direction, that is, move to the left to fill padding-left*/
left: -200px;
}
.middle{
background-color: blue;
/* fill a single line */
width: 100%;
height: 1600px;
}
.right{
background-color: red;
width: 300px;
/*Negative margins move the left and right boxes to the same line as the middle box*/
margin-left: -300px;
/*Negative values move in the opposite direction, that is, move to the right to fill padding-right*/
right: -300px;
}
</style>
</head>
<body>
<!-- Grail Layout-->
<div class="container">
<!-- The div in the middle must be written at the front, loading first -->
<div class="middle">Middle flex area</div>
<div class="left">left column</div>
<div class="right">Right column</div>
</div>
</body>
</html>
2. Double wing layout
<!DOCTYPE html>
<html>
<head>
<title>Double wing layout</title>
<meta charset="utf-8">
<style type="text/css">
.left,.middle,.right{
min-height: 130px;
float: left;
}
.left{
background-color: red;
width: 200px;
margin-left: -100%;
}
.middle{
background-color: gray;
width: 100%;
}
.right{
background-color: darkblue;
width: 300px;
margin-left: -300px;
}
.content{
margin: 0 300px 0 200px;
background-color: orange;
}
</style>
</head>
<body>
<div class="middle">
<div class="content">middle</div>
</div>
<div class="left">left</div>
<div class="right">right</div>
</body>
</html>
3. flex layout
<!DOCTYPE html>
<html>
<head>
<title>flex implements three-column layout</title>
<meta charset="utf-8">
<style type="text/css">
.container{
min-height: 130px;
display: flex;
}
.middle{
background-color: rgba(0,0,255,0.7);
/*flex-grow defaults to 0 magnification ratio, fills the blank, */
flex-grow:1;
}
.left{
background-color: rgba(0,255,0,0.7);
/*order defaults to 0, the smaller the order*/
order: -1;
/* Item occupies space in the main axis */
flex-basis: 200px;
}
.right{
background-color: rgba(255,0,0,0.7);
/* Item occupies space in the main axis */
flex-basis: 300px;
}
</style>
</head>
<body>
<div class="container">
<div class="middle">middle</div>
<div class="left">left</div>
<div class="right">right</div>
</div>
</body>
</html>
4. Absolute positioning
<!DOCTYPE html>
<html>
<head>
<title>Absolute positioning to achieve three-column layout</title>
<meta charset="utf-8">
<style type="text/css">
.container{
position: relative;
}
.middle,.left,.right{
top: 0;
height: 130px;
}
.middle{
background-color: red;
height: 500px;
margin: 0 300px 0 200px;
}
.left{
background-color: blue;
width: 200px;
position: absolute;
left: 0;
}
.right{
background-color: green;
width: 300px;
position: absolute;
right: 0;
}
</style>
</head>
<body>
<div class="container">
<!-- The div in the middle must be written at the front, loading first -->
<div class="middle">Middle flex area</div>
<div class="left">left column</div>
<div class="right">Right column</div>
</div>
</body>
</html>