嵌套的CSS网格布局在Chrome和Firefox中的行为不同

Question

我正在尝试使用CSS网格布局来模拟一些响应行为,特别是:

grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));

我的示例https://codepen.io/elgs/pen/goNxeL在Chrome中运行良好,但它似乎在Firefox中不起作用.您可以在水平调整浏览器大小时找到它.

另一个示例https://codepen.io/elgs/pen/YYoxOq适用于Chrome和Firefox.

html,body {
  height: 100%;
  width: 100%;
  margin: 0 auto;
  padding: 0;
}
body {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 100px 1fr 50px;
}
.header {
  grid-column: 1/2;
  grid-row: 1/2;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  background-color: #57324f;
}
.header .title {
  grid-column: 1/2;
  grid-row: 1/2;
  align-self: center;
  justify-self: center;
  width: 100%;
  max-width: 1000px;
  color: aliceblue;
}
.footer {
  grid-column: 1/2;
  grid-row: 3/4;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  background-color: #57324f;
}
.footer .copyright {
  grid-column: 1/2;
  grid-row: 1/2;
  align-self: center;
  font-size: 12px;
  justify-self: center;
  width: 100%;
  max-width: 1000px;
  color: aliceblue;
}
.content {
  grid-column: 1/2;
  grid-row: 2/3;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 0;
  background-color: aliceblue;
}
.content .main {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  grid-gap: 10px;
  grid-auto-flow: dense;
  justify-self: center;
  width: 100%;
  margin-top: 10px;
  max-width: 1000px;
}
.placeholder {
    height: 100px;
  position: relative;
  border: 1px solid red;
}

<div class="header">
    <div class="title">
        <h2>Header</h2>
    </div>
</div>
<div class="content">
    <div class="main">
        <div class="placeholder"></div>
        <div class="placeholder"></div>
        <div class="placeholder"></div>
        <div class="placeholder"></div>
        <div class="placeholder"></div>
        <div class="placeholder"></div>
    </div>
</div>
<div class="footer">
    <div class="copyright">
        <span>Footer</span>
    </div>
</div>

我想知道我做错了什么,或者是浏览器的错误.

• Firefox版本:58.0(64位)
• Chrome版本:版本64.0.3282.119(官方版本)(64位)

Answer 1

这似乎是Firefox中的一个错误.但我不确定.

这是明确的:

1. 你有嵌套网格容器的事实很重要.

   您的第二个演示版适用于Chrome和Firefox,只有一个网格容器.

   第一个仅适用于Chrome的演示版具有嵌套网格容器.如果您消除了嵌套,并且只使用一个网格容器,则布局适用于两种浏览器.

   因此,作为一种可能的跨浏览器解决方案,最小化网格容器的嵌套.

   在这个修订的演示中,我注释掉display: grid的body和.content元素.剩下的唯一网格容器是打开的.main,红色框的父级:

   修订演示

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

body {
  /* display: grid; */
  grid-template-columns: 1fr;
  grid-template-rows: 100px 1fr 50px;
}

.header {
  grid-column: 1/2;
  grid-row: 1/2;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  background-color: #57324f;
}

.header .title {
  grid-column: 1/2;
  grid-row: 1/2;
  align-self: center;
  justify-self: center;
  width: 100%;
  max-width: 1000px;
  color: aliceblue;
}

.footer {
  grid-column: 1/2;
  grid-row: 3/4;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  background-color: #57324f;
}

.footer .copyright {
  grid-column: 1/2;
  grid-row: 1/2;
  align-self: center;
  font-size: 12px;
  justify-self: center;
  width: 100%;
  max-width: 1000px;
  color: aliceblue;
}

.content {
  grid-column: 1/2;
  grid-row: 2/3;
  /* display: grid; */
  grid-template-columns: 1fr;
  grid-template-rows: 0;
  background-color: aliceblue;
}

.content .main {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  grid-gap: 10px;
  grid-auto-flow: dense;
  justify-self: center;
  width: 100%;
  margin-top: 10px;
  max-width: 1000px;
}

.placeholder {
    height: 100px;
  position: relative;
  border: 1px solid red;
}

<div class="header">
  <div class="title">
    <h2>Header</h2>
  </div>
</div>
<div class="content">
  <div class="main">
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
  </div>
</div>
<div class="footer">
  <div class="copyright">
    <span>Footer</span>
  </div>
</div>

2. 在Firefox中,固定值max-width可防止盒子缩小以适应更小的屏幕尺寸.

   Firefox有一个问题是缩小.main容器上的像素值max-width.Chrome没有.

   想到的典型解决方案是覆盖min-width: auto网格项的默认设置.这可以防止项目缩小超过其内容大小或其定义的宽度.

   但是,此处描述的解决方案:防止内容扩展网格项 ...在这种情况下不起作用.

   (可能是因为网格项中没有内容且没有定义的宽度.定义的唯一宽度位于网格列上,在网格容器上设置.因此,仅适用于网格项的解决方案可能甚至不适用.)

   作为一种可能的解决方法,如果必须保留嵌套容器,则max-width使用百分比值而不是使用固定值.这可能对你有用.

   修改后的codepen

body {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 100px 1fr 50px;
  height: 100vh;
  margin: 0;
}

.header {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  background-color: #57324f;
}

.content {
  display: grid;
  grid-template-columns: 1fr;
  /* grid-template-rows: 0; */
  align-content: start;  /* new */
  background-color: aliceblue;
}

.content .main {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  grid-auto-rows: 100px;  /* new */
  grid-gap: 10px;
  grid-auto-flow: dense;
  justify-self: center;
  width: 100%;
  margin-top: 10px;
  /* max-width: 1000px; */
  max-width: 75%;  /* new */
}

.placeholder {
  border: 1px solid red;
}

.footer {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  background-color: #57324f;
}

.header .title,
.footer .copyright {
  align-self: center;
  justify-self: center;
  width: 100%;
  max-width: 1000px;
  color: aliceblue;
}

.footer .copyright {
  font-size: 12px;
}

<div class="header">
  <div class="title">
    <h2>Header</h2>
  </div>
</div>
<div class="content">
  <div class="main">
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
    <div class="placeholder"></div>
  </div>
</div>
<div class="footer">
  <div class="copyright">
    <span>Footer</span>
  </div>
</div>