为什么内容内容以100％的宽度出现

Question

为什么我的.topnav，.mainnav和我的.content div内容转义了它们？

当我达到行数上限时该怎么做？

它们已经是100％的宽度

* {
  list-style: none;
  text-decoration: none;
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100%;
  height: 100%;
}

.container {
  display: grid;
  grid-template-columns: 280px 1fr;
  width: 100%;
  height: 100%;
  position: fixed;
}

.leftbar {
  background: #1D2126;
  height: 100%;
  width: 100%;
  grid-template-rows: 100px 1fr;
}

.rightbar {
  display: grid;
  grid-template-rows: 100px 1fr;
  width: calc(100%-280px);
  height: 100%;
  position: fixed;
  margin-left: 280px;
}

.header {
  display: grid;
  grid-template-rows: 30px 70px;
  width: 100%;
  height: 100%;
}

.topnav {
  background: #1A1E23;
}

.mainnav {
  background: #1D2126;
}

.content {
  background: #21252B;
  overflow-y: scroll;
}

<div class="container">
  <div class="leftbar">
    <div class="logo"><img src="https://www.csgoroll.com/en/assets/logo.png" width="80%"></div>
    <div class="chat">
      <div class="chatbox">

      </div>
      <div class="chatsend">

      </div>
    </div>
  </div>
  <div class="rightbar">
    <div class="header">
      <div class="topnav">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</div>
      <div class="mainnav">d</div>
    </div>
    <div class="content">
      asdaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaassssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
    </div>
  </div>
</div>

Answer 1

您可以实现这样的滚动：

* {
  list-style: none;
  text-decoration: none;
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100%;
  height: 100%;
}

.container {
  display: grid;
  grid-template-columns: 280px 1fr;
  width: 100%;
  height: 100%;
  position: fixed;
}

.leftbar {
  background: #1D2126;
  height: 100%;
  width: 100%;
  grid-template-rows: 100px 1fr;
}

.rightbar {
  display: grid;
  grid-template-rows: 100px 1fr;
  width: calc(100%-280px);
  height: 100%;
  overflow: scroll;
}

.header {
  display: grid;
  grid-template-rows: 30px 70px;
  width: 100%;
  height: 100%;
}

.topnav {
  background: #1A1E23;
}

.mainnav {
  background: #1D2126;
}

.content {
  background: #21252B;
  overflow-y: scroll;
}

<div class="container">
  <div class="leftbar">
    <div class="logo"><img src="https://www.csgoroll.com/en/assets/logo.png" width="80%"></div>
    <div class="chat">
      <div class="chatbox">

      </div>
      <div class="chatsend">

      </div>
    </div>
  </div>
  <div class="rightbar">
    <div class="header">
      <div class="topnav">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</div>
      <div class="mainnav">d</div>
    </div>
    <div class="content">
      asdaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaassssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
    </div>
  </div>
</div>

Answer 2

您有两个原因：

首先，您有一个无休止的文本，以“ aaaa”开头，因此，如果您不破坏文本（使用空格或使用CSS），则布局将跟随该文本

第二，在CSS中使用calc()函数时，必须进行加减运算，因此必须在运算符周围留出空格，因此请使用width: calc(100%-280px);代替您需要具有width: calc(100% - 280px);

查看下面的代码片段（对代码进行了一些小的改进）

* {
  list-style: none;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

*::before,
*::after {
  box-sizing: border-box;
}

a {
  text-decoration: none;
}

html,
body {
  width: 100%;
  height: 100%;
}

.container {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100%;
}

.leftbar {
  background: #1D2126;
  height: 100%;
}

.rightbar {
  display: grid;
  grid-template-rows: 100px 1fr;
}

.header {
  display: grid;
  grid-template-rows: 30px 70px;
}

.topnav {
  background: #1A1E23;
}

.mainnav {
  background: #1D2126;
}

.content {
  background: #21252B;
  overflow-y: scroll;
}

.logo img {
  width: 80%
}

<body>
  <div class="container">
    <div class="leftbar">
      <div class="logo">
        <img src="https://www.csgoroll.com/en/assets/logo.png" />
      </div>
      <div class="chat">
        <div class="chatbox">

        </div>
        <div class="chatsend">

        </div>
      </div>
    </div>
    <div class="rightbar">
      <div class="header">
        <div class="topnav">aaaa</div>
        <div class="mainnav">d</div>
      </div>
      <div class="content">aaaa
      </div>
    </div>
  </div>