html - 如何将列内容包装到滚动底部？

Question

如何在向下滚动时用浅绿色#left“滚动内容”容器包裹到页面底部？当左栏中没有“滚动内容”时，它也应该拉伸(stretch) 100% 的页面。我认为 fixed container 下的 right column 也应该遵循相同的规则。

.wrapper,
html,
body {
  height: 100%;
  margin: 0;
}

.wrapper {
  display: flex;
  /* flex-flow: column wrap; */
  flex-direction: column;
  /* align-items: stretch; */
  height: 100%;
}

.top {
  height: 60px;
}

.content {
  flex-direction: row;
  align-items: stretch;
  display: flex;
  flex: 1;
  height: 100%;
}

nav {
  height: 60px;
  background: tomato;
  position: fixed;
  top: 0;
  width: 100%;
}

#left {
  display: flex;
  background: lightgreen;
  flex: 0 0 40%;

  /* justify-content: center; */
  flex-direction: column;
  /* flex-wrap: wrap; */
}
#left > p {
  flex: 1;
}

#right {
  display: flex;
  flex: 0 0 60%;
}

#fixed {
  position: fixed;
  background: aqua;
  width: 60%;
  /* height: 100%; */
}

<div class="wrapper">
  <div class="top">
    <nav role='navigation'>
    </nav>
  </div>

  <div class="content">
    <div id="left">
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
    </div>
    <div id="right">
      <div id="fixed">
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
      </div>
    </div>
  </div>
</div>

Answer 1

/* .wrapper,  */   /* removed this */
html,
body {
  height: 100%;
  margin: 0;
}

.wrapper {
  display: flex;
  /* flex-flow: column wrap; */
  flex-direction: column;
  /* align-items: stretch; */
  min-height: 100%;   /* changed here */
}

.top {
  height: 60px;
}

.content {
  flex-direction: row;
  align-items: stretch;
  display: flex;
  flex: 1;
  height: 100%;
}

nav {
  height: 60px;
  background: tomato;
  position: fixed;
  top: 0;
  width: 100%;
}

#left {
  display: flex;
  background: lightgreen;
  flex: 0 0 40%;

  /* justify-content: center; */
  flex-direction: column;
  /* flex-wrap: wrap; */
}
#left > p {
  flex: 1;
}

#right {
  display: flex;
  flex: 0 0 60%;
}

#fixed {
  position: fixed;
  background: aqua;
  width: 60%;
  /* height: 100%; */
}

<div class="wrapper">
  <div class="top">
    <nav role='navigation'>
    </nav>
  </div>

  <div class="content">
    <div id="left">
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
      <p>Scrolling Content</p>
    </div>
    <div id="right">
      <div id="fixed">
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
        <p>This content should not scroll</p>
      </div>
    </div>
  </div>
</div>