使用“z-index: 1”将“margin”属性设置为“fixed”元素

问题描述 投票：0回答：1

有一个列表和一个评论字段。评论字段位于页面底部的 

fixed
。当列表很长时，会应用页面滚动。

我希望列表的底部始终与评论字段的顶部保持一定的垂直距离。当然，我可以将 
margin-bottom
属性应用于 
.meaning
类（它塑造列表），但是如果注释字段包含 2 或 3 行文本（即对于设置边距）。

因此，在我看来，将 
margin-top
设置为 comment 字段更有意义。但是，可能由于评论字段的 
z-index: 1
属性，
margin-top
也不起作用。

这里是JS Bin，以防万一。

      .meaning {
        list-style-type: none;
        counter-reset: item;
        hyphens: auto;
        font-size: calc(0.7em + 1.5vw);
      }

      .meaning > li {
        position: relative;
      }

      .meaning > li::before {
        content: counter(item);
        counter-increment: item;
        position: absolute;
        top: 0;
        text-align: center;
        margin-left: calc(-0.7em - 2.5vw);          
      }

      .meaning-word {
        margin-top: 50px;
      }

      .sentences {
        list-style-type: none;
        padding-left: 0;
        font-size: calc(0.7em + 1.5vw);
        margin-top: 30px;                   
      }

      .sentences > li.sentence-en {
        color: #5d78e5;
      }

      .sentences > li.sentence-de {
        margin-top: 5px;
      }

      .comment {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: #fdf1d1;
        color: #f92504;
        font-size: calc(0.5em + 2vw);
        margin: 0;
        padding: 5px 4vw;
        box-sizing: border-box;
        z-index: 1;
      }
<!DOCTYPE html>
<html>
<body>
    
  <ol class="meaning">
    <li class="meaning-word">Meaning1</li>
      <ul class="sentences">
        <li class="sentence-en">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum</li>
        <li class="sentence-de">Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.</li>
      </ul>
    <li class="meaning-word">Meaning2</li>
      <ul class="sentences">
        <li class="sentence-en">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum</li>
        <li class="sentence-de">Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.</li>
    </ul>
  </ol>
  
    <div class="comment">
    <p>This is line 1 of text information.</p>
  </div>

</body>
</html>

html css css-position z-index
1个回答
0
投票

使用 

position: sticky
来代替，那么您可以轻松设置 
margin-top
，因为元素保留在流中

.meaning {
  list-style-type: none;
  counter-reset: item;
  hyphens: auto;
  font-size: calc(0.7em + 1.5vw);
}

.meaning>li {
  position: relative;
}

.meaning>li::before {
  content: counter(item);
  counter-increment: item;
  position: absolute;
  top: 0;
  text-align: center;
  margin-left: calc(-0.7em - 2.5vw);
}

.meaning-word {
  margin-top: 50px;
}

.sentences {
  list-style-type: none;
  padding-left: 0;
  font-size: calc(0.7em + 1.5vw);
  margin-top: 30px;
}

.sentences>li.sentence-en {
  color: #5d78e5;
}

.sentences>li.sentence-de {
  margin-top: 5px;
}

.comment {
  position: sticky;
  bottom: 0;
  background-color: #fdf1d1;
  color: #f92504;
  font-size: calc(0.5em + 2vw);
  margin-top: 40px;
  padding: 5px 4vw;
  box-sizing: border-box;
}
<ol class="meaning">
    <li class="meaning-word">Meaning1</li>
    <ul class="sentences">
      <li class="sentence-en">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
        It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with
        desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum</li>
      <li class="sentence-de">Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked
        up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus
        Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a
        line in section 1.10.32.</li>
    </ul>
    <li class="meaning-word">Meaning2</li>
    <ul class="sentences">
      <li class="sentence-en">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
        It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with
        desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum</li>
      <li class="sentence-de">Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked
        up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus
        Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a
        line in section 1.10.32.</li>
    </ul>
  </ol>

  <div class="comment">
    <p>This is line 1 of text information.</p>
  </div>

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