嵌套的CSS网格隐式填充父网格的剩余高度

Question

我试图让一个子CSS网格尊重父网格的尺寸.我怎么能这样做？

我最初写的是这样的:https: //codepen.io/anon/pen/XVExrj

CSS:

.site,
body,
html {
  padding: 0;
  margin: 0;
  height: 100%;
  width: 100%;
}

.parent-grid {
  display: grid;
  height: 300px;
  width: 300px;
  grid-template-rows: 30px 1fr;
  grid-template-columns: 1fr;
  grid-template-areas: 'nav' 'child';
  background-color: grey;
}

.nav {
  background-color: #0D47A1;
  grid-area: nav;
}

.child {
  grid-area: child;
}

.child-grid {
  display: grid;
  grid-template-rows: 1fr;
  grid-template-columns: 1fr;
  grid-template-areas: 'test';
  background-color: grey;
}

.content {
  background-color: red;
  overflow: auto;
  grid-area: test;
}

* {
  box-sizing: border-box;
}

HTML

<div class="parent-grid">
  <div class="nav">Sidebar</div>
  <div class="child">
    <div class="child-grid">
      <div class="content">
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
      </div>
    </div>
  </div>
</div>

我希望'content'是一个可滚动的区域,不会扩展父级的高度(所以它应该是'270px')

Answer 1

默认情况下.child会提供网格项()min-height: auto.适用min-height: 0于.child推翻这一点.

然后加入height: 100%到.child-grid和overflow: auto到content...

.site,
body,
html {
  padding: 0;
  margin: 0;
  height: 100%;
  width: 100%;
}

.parent-grid {
  display: grid;
  height: 300px;
  width: 300px;
  grid-template-rows: 10vh 1fr;
  grid-template-columns: 1fr;
  grid-template-areas: 'nav' 'child';
  background-color: grey;
}

.nav {
  background-color: #0D47A1;
  grid-area: nav;
}

.child {
  grid-area: child;
  min-height: 0;
}

.child-grid {
  display: grid;
  grid-template-rows: 1fr;
  grid-template-columns: 1fr;
  grid-template-areas: 'test';
  background-color: grey;
  height: 100%;
}

.content {
  background-color: red;
  overflow: auto;
  grid-area: test;
}

* {
  box-sizing: border-box;
}

<div class="parent-grid">
  <div class="nav">Sidebar</div>
  <div class="child">
    <div class="child-grid">
      <div class="content">
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
      </div>
    </div>
  </div>
</div>

Answer 2

这是一个快速而简单的解决方案,不会对您的HTML进行任何更改.只需将其添加到您的代码中:

.child { 
   overflow: auto;
}

这将覆盖min-height: auto网格项的默认设置,允许它们缩小到低于其内容的大小并创建溢出条件.

这里有完整的解释:防止内容扩展网格项

.site,
body,
html {
  padding: 0;
  margin: 0;
  height: 100%;
  width: 100%;
}

.parent-grid {
  display: grid;
  height: 300px;
  width: 300px;
  grid-template-rows: 30px 1fr;
  grid-template-columns: 1fr;
  grid-template-areas: 'nav' 'child';
  background-color: grey;
}

.nav {
  background-color: aqua;
  grid-area: nav;
}

.child {
  grid-area: child;
  overflow: auto;   /* NEW */
}

.child-grid {
  display: grid;
  grid-template-rows: 1fr;
  grid-template-columns: 1fr;
  grid-template-areas: 'test';
  background-color: grey;
}

.content {
  background-color: red;
  overflow: auto;
  grid-area: test;
}

* {
  box-sizing: border-box;
}

<div class="parent-grid">
  <div class="nav">Sidebar</div>
  <div class="child">
    <div class="child-grid">
      <div class="content">
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
        <div>blah</div>
      </div>
    </div>
  </div>
</div>

或者,而不是你在这里:

.parent-grid {
  display: grid;
  height: 300px;
  grid-template-rows: 30px 1fr;
}

试试这个:

.parent-grid {
  display: grid;
  grid-template-rows: 30px 270px;
}

.content {
  overflow: auto;
  height: 100%;
}

我还删除了一个.child-grid似乎没有必要的额外容器().

.site,
body,
html {
  padding: 0;
  margin: 0;
  height: 100%;
  width: 100%;
}

.parent-grid {
  display: grid;
  height: 300px;
  width: 300px;
  grid-template-rows: 30px 270px;
  grid-template-columns: 1fr;
  grid-template-areas: 'nav' 'child';
  background-color: grey;
}

.nav {
  background-color: aqua;
  grid-area: nav;
}

.child {
  grid-area: child;
}

.content {
  background-color: red;
  overflow: auto;
  height: 100%;
}

* {
  box-sizing: border-box;
}

<div class="parent-grid">
  <div class="nav">Sidebar</div>
  <div class="child">
    <div class="content">
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
      <div>blah</div>
    </div>
  </div>
</div>