以下是我用来实现上述布局的代码:
.header {
height: 50px;
}
.body {
position: absolute;
top: 50px;
right: 0;
bottom: 0;
left: 0;
display: flex;
}
.sidebar {
width: 140px;
}
.main {
flex: 1;
display: flex;
flex-direction: column;
}
.content {
flex: 1;
display: flex;
}
.column {
padding: 20px;
border-right: 1px solid #999;
}
<div class="header">Main header</div>
<div class="body">
<div class="sidebar">Sidebar</div>
<div class="main">
<div class="page-header">Page Header. Content columns are below.</div>
<div class="content">
<div class="column">Column 1</div>
<div class="column">Column 1</div>
<div class="column">Column 1</div>
</div>
</div>
</div>
我省略了用于样式化的代码。你可以在笔里看到所有这些。
上述方法是有效的，但是当内容区域的内容溢出时，会导致整个页面滚动。我只想让内容区域本身滚动，所以我在内容div中添加了overflow: auto。
现在的问题是，列本身并没有超出它们的父高度，所以边界也在那里被切断了。
这支笔显示了滚动问题。
如何将内容区域设置为独立滚动，同时仍然让其子区域超出内容框的高度?
我遇到的一个问题是，要有一个滚动条，n元素需要指定高度(而不是%)。
诀窍是在每个列中嵌套另一组div，并将列父项的显示设置为flex-direction: column。
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
body {
overflow-y: hidden;
overflow-x: hidden;
color: white;
}
.base-container {
display: flex;
flex: 1;
flex-direction: column;
width: 100%;
height: 100%;
overflow-y: hidden;
align-items: stretch;
}
.title {
flex: 0 0 50px;
color: black;
}
.container {
flex: 1 1 auto;
display: flex;
flex-direction: column;
}
.container .header {
flex: 0 0 50px;
background-color: red;
}
.container .body {
flex: 1 1 auto;
display: flex;
flex-direction: row;
}
.container .body .left {
display: flex;
flex-direction: column;
flex: 0 0 80px;
background-color: blue;
}
.container .body .left .content,
.container .body .main .content,
.container .body .right .content {
flex: 1 1 auto;
overflow-y: auto;
height: 100px;
}
.container .body .main .content.noscrollbar {
overflow-y: hidden;
}
.container .body .main {
display: flex;
flex-direction: column;
flex: 1 1 auto;
background-color: green;
}
.container .body .right {
display: flex;
flex-direction: column;
flex: 0 0 300px;
background-color: yellow;
color: black;
}
.test {
margin: 5px 5px;
border: 1px solid white;
height: calc(100% - 10px);
}
</style>
这是html:
<div class="base-container">
<div class="title">
Title
</div>
<div class="container">
<div class="header">
Header
</div>
<div class="body">
<div class="left">
<div class="content">
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
<li>10</li>
<li>12</li>
<li>13</li>
<li>14</li>
<li>15</li>
<li>16</li>
<li>17</li>
<li>18</li>
<li>19</li>
<li>20</li>
<li>21</li>
<li>22</li>
<li>23</li>
<li>24</li>
</ul>
</div>
</div>
<div class="main">
<div class="content noscrollbar">
<div class="test">Test</div>
</div>
</div>
<div class="right">
<div class="content">
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>Right</div>
<div>End</div>
</div>
</div>
</div>
</div>
</div>
https://jsfiddle.net/LiamFlavelle/czpjdfr4/
我和Tab Atkins (flexbox规范的作者)谈过这个问题，这就是我们的想法:
HTML:
<div class="content">
<div class="box">
<div class="column">Column 1</div>
<div class="column">Column 2</div>
<div class="column">Column 3</div>
</div>
</div>
CSS:
.content {
flex: 1;
display: flex;
overflow: auto;
}
.box {
display: flex;
min-height: min-content; /* needs vendor prefixes */
}
这些是笔:
短柱被拉伸。
较长的列溢出和滚动。
这样做的原因是align-items:如果项目具有固有高度，则拉伸不会收缩它们，这是通过min-content实现的。
