CSS: Three Column Layout

margin

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .container {
      width: 100%;
      height: 100%;
    }

    .left {
      float: left;
      width: 200px;
      height: 100vh;
      background-color: palegreen;
    }

    .right {
      float: right;
      width: 200px;
      height: 100vh;
      background-color: aqua;
    }

    .main {
      background-color: peru;
      height: 100vh;
      margin-left: 200px;
      margin-right: 200px;
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="left"></div>
    <div class="right"></div>
    <div class="main"></div>
  </div>
</body>

</html>

flex

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .container {
      width: 100%;
      height: 100%;
      display: flex;
    }

    .left {
      float: left;
      width: 200px;
      height: 100vh;
      background-color: palegreen;
    }

    .right {
      float: right;
      width: 200px;
      height: 100vh;
      background-color: aqua;
    }

    .main {
      flex: 1;
      background-color: peru;
      height: 100vh;
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="left"></div>
    <div class="main"></div>
    <div class="right"></div>
  </div>
</body>

</html>

display: table

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .container {
      width: 100%;
      height: 100%;
      display: table;
    }

    .left {
      display: table-cell;
      width: 200px;
      height: 100vh;
      background-color: palegreen;
    }

    .right {
      display: table-cell;
      width: 200px;
      height: 100vh;
      background-color: aqua;
    }

    .main {
      display: table-cell;
      background-color: peru;
      height: 100vh;
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="left"></div>
    <div class="main"></div>
    <div class="right"></div>
  </div>
</body>

</html>

position

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .container {
      position: relative;
    }

    .left {
      position: absolute;
      left: 0;
      width: 200px;
      height: 100vh;
      background-color: palegreen;
    }

    .right {
      position: absolute;
      right: 0;
      width: 200px;
      height: 100vh;
      background-color: aqua;
    }

    .main {
      background-color: peru;
      height: 100vh;
      margin:0 200px;
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="left"></div>
    <div class="right"></div>
    <div class="main"></div>
  </div>
</body>

</html>

calc

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .wrapper{
      width: 100%;
      min-width: 600px;
    }
    .side{
      width: 200px;
      height: 200px;
      background-color: palegreen;
    }
    .left{
      float: left;
    }
    .right{
      float: right;
    }
    .main{
      background-color: peru;
      height: 500px;
      float: left;
      width: calc(100% - 400px);
    }
  </style>
</head>
<body>
  <div class="wrapper">
    <div class="side left">left</div>
    <div class="side right">right</div>
    <div class="main">main</div>
  </div>
</body>
</html>

子 absolute, 父 relative

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .outer{
      position:relative;
    }
    .inner{
      position:absolute;
      top:0;
      height: 300px;
      background-color: palegreen;
    }
    .left{
      left: 0;
      width: 200px;
    }
    .right{
      right: 0;
      width: 200px;
    }
    .main{
      /* width: calc(100% - 400px);
      left: 200px; */
      left: 200px;
      right:200px;
      background-color: aqua;
    }
  </style>
</head>
<body>
  <div class="outer">
    <div class="inner left">01</div>
    <div class="inner main">02</div>
    <div class="inner right">03</div>
  </div>
</body>
</html>

flex

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .outer {
      display: flex;
    }

    .inner {
      width: 200px;
      height: 200px;
      background-color: palegreen;
    }

    .main {
      /* flex:auto; */
      flex: 1;
      background-color: aqua;
    }
  </style>
</head>

<body>
  <div class="outer">
    <div class="inner left">01</div>
    <div class="inner main">02</div>
    <div class="inner right">03</div>
  </div>
</body>

</html>

table

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .outer {
      display: table;
    }

    .inner{
      width: 200px;
      height: 300px;
      background-color: palegreen;
    }
    .main{
      display: table-cell;
      background-color: aqua;
      width: 100%;
    }
  </style>
</head>

<body>
  <div class="outer">
    <div class="inner left">01</div>
    <div class="inner main">02</div>
    <div class="inner right">03</div>
  </div>
</body>

</html>

display: grid

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .outer {
      display: grid;
      width: 100%;
      grid-template-columns: 200px auto 200px;
      grid-template-rows: 300px 400px 300px;
    }

    .inner {
      background-color: palegreen;
    }

    .main {
      background-color: aqua;
    }
  </style>
</head>

<body>
  <div class="outer">
    <div class="inner left">01</div>
    <div class="inner main">02</div>
    <div class="inner right">03</div>
  </div>
</body>

</html>

Grail Layout 圣杯布局

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    html,
    body,
    .outer {
      height: 100%;
      margin: 0;
    }

    .outer {
      background-color: gray;
      padding: 0 200px 0 150px;
      box-sizing: border-box;
    }

    .inner {
      height: 100%;
      float: left;
      position: relative;
    }

    .main {
      width: 100%;
      background-color: palegreen;
    }

    .left {
      left: -150px;
      margin-left: -100%;
      width: 150px;
      background-color: aqua;
    }

    .right {
      width: 200px;
      background-color: peru;
      margin-left: -200px;
      right: -200px;
    }
  </style>
</head>

<body>
  <div class="outer">
    <div class="inner main">main</div>
    <div class="inner left">left</div>
    <div class="inner right">right</div>
  </div>
</body>

</html>

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    body {
      margin: 0;
      text-align: center;
    }

    .main {
      margin: 0 auto;
      width: 100%;
      height: 500px;
      background-color: palegreen;
      float: left;
    }

    .left {
      float: left;
      width: 200px;
      height: 400px;
      background-color: peru;
      margin-left: -100%;
      position: relative;
      left: -200px
    }

    .right {
      float: left;
      width: 300px;
      height: 450px;
      background-color: plum;
      margin-left: -300px;
      position: relative;
      right: -300px;
    }

    .container {
      padding: 0 300px 0 200px;
      overflow: auto;
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="main">main</div>
    <div class="left">left</div>
    <div class="right">right</div>
  </div>
</body>

</html>

双飞翼布局

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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    header,
    footer {
      width: 100%;
      height: 100px;
      background-color: palegreen;
    }

    footer {
      clear: left;
    }

    .wrapper {
      width: 100%;
      float: left;
    }

    main {
      margin: 0 100px;
      background-color: tan;
    }

    .left {
      width: 100px;
      float: left;
      margin-left: -100%;
      background-color: peru;
    }

    .right {
      width: 100px;
      float: left;
      margin-left: -100px;
      background-color: plum;
    }
  </style>
</head>

<body>

  <header>header</header>
  <div class="wrapper">
    <main>main</main>
  </div>
  <div class="left">left</div>
  <div class="right">right</div>

  <footer>footer</footer>
</body>

</html>