html - 如何修复溢出-y : scroll not working

Question

我正在尝试制作 .menu-scroll 中的元素类是 <ul> 的一个 div列表在超过其高度限制时显示滚动条，在我的情况下，它只会不断向下推 .menu-footer div 并在页面中造成巨大的问题。

body {
  margin: 0;
  padding: 0;
}

.grid {
  display: grid;
  grid-template-columns: 300px 100px auto 100px;
  grid-template-rows: 50% 50%;
  background-color: gray;
  height: 100vh;
}

.grid>#menu {
  display: grid;
  background-color: blueviolet;
  text-align: center;
  font-size: 30px;
  grid-column-start: 1;
  grid-column-end: 2;
  grid-row-start: 1;
  grid-row-end: 2 end;
  grid-template-rows: auto 75px;
}

.grid>#posts-wrapper {
  display: grid;
  background-color: gray;
  text-align: center;
  font-size: 30px;
  grid-column-start: 3;
  grid-column-end: 4;
  grid-template-rows: 50px auto;
  grid-template-columns: auto;
}

#posts {
  background-color: white;
  grid-row-start: 2;
  grid-row-end: 3;
}

.menu-footer {
  background-color: green;
}

.menu-scroll {
  display: grid;
  grid-template-rows: 100px auto;
}

.menu-scroll>.cover {
  background-color: yellow;
}

.menu-scroll>.menu-list {
  position: sticky;
  overflow: scroll;
}

.list-item {
  background-color: tomato;
  padding: 10px 0px;
  margin-top: 5px;
}

<div class="grid" id="container">
  <div class="grid-item" id="menu">
    <div class="menu-scroll">
      <div class="cover">cover</div>
      <div class="menu-list">
        <ul style="list-style: none;">
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
        </ul>
      </div>
    </div>

    <div class="menu-footer">sticky footer</div>

  </div>

  <div class="grid" id="posts-wrapper">
    <div id="posts">
      posts
    </div>
  </div>
</div>

Answer 1

它的发生是因为在你的:

.menu-scroll {
  display: grid;
  grid-template-rows: 100px auto;
}

您设置了 auto 中除第一个元素之外的所有元素调整网格行。所以无论你添加多少元素到ul , 在第二个元素中 <div class="menu-list"> , 它会一直增长。

您需要将其设置为在第二个元素上具有明确的高度。

像这样:

.menu-scroll {
      display: grid;
      grid-template-rows: 100px 300px auto;
    }

body {
  margin: 0;
  padding: 0;
}

.grid {
  display: grid;
  grid-template-columns: 300px 100px auto 100px;
  grid-template-rows: 50% 50%;
  background-color: gray;
  height: 100vh;
}

.grid>#menu {
  display: grid;
  background-color: blueviolet;
  text-align: center;
  font-size: 30px;
  grid-column-start: 1;
  grid-column-end: 2;
  grid-row-start: 1;
  grid-row-end: 2 end;
  grid-template-rows: auto 75px;
}

.grid>#posts-wrapper {
  display: grid;
  background-color: gray;
  text-align: center;
  font-size: 30px;
  grid-column-start: 3;
  grid-column-end: 4;
  grid-template-rows: 50px auto;
  grid-template-columns: auto;
}

#posts {
  background-color: white;
  grid-row-start: 2;
  grid-row-end: 3;
}

.menu-footer {
  background-color: green;
}

.menu-scroll {
  display: grid;
  grid-template-rows: 100px 300px auto;
}

.menu-scroll>.cover {
  background-color: yellow;
}

.menu-scroll>.menu-list {
  position: sticky;
  overflow: scroll;
}

.list-item {
  background-color: tomato;
  padding: 10px 0px;
  margin-top: 5px;
}

<div class="grid" id="container">
  <div class="grid-item" id="menu">
    <div class="menu-scroll">
      <div class="cover">cover</div>
      <div class="menu-list">
        <ul style="list-style: none;">
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
          <li class="list-item">menu item</li>
        </ul>
      </div>
    </div>

    <div class="menu-footer">sticky footer</div>

  </div>

  <div class="grid" id="posts-wrapper">
    <div id="posts">
      posts
    </div>
  </div>
</div>