在父母悬停时显示孩子，而不是在父母或子女悬停上显示

时间：2017-06-19 16:24:19

标签： html css drop-down-menu hover transition

我创建了一个简单的下拉菜单，只要我将鼠标悬停在父列表项上，就会缩放和淡入，＆＃34;服务＆＃34;。除了当我将鼠标悬停在子元素（下拉菜单）上时，所有内容都可以正常工作。我知道简单地用不透明度隐藏它不会阻止用户将鼠标悬停在它上面但它允许0.4s过渡生效。如果我用display：none或visibility：hidden来隐藏它，那么转换就会立即发生。我考虑使用jQuery来解决这个问题，但是想知道是否有纯粹基于CSS的解决方案。

JSFiddle

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* {
  margin: 0;
  padding: 0;
  font-family: Montserrat;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

nav {
  background-color: white;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}

nav > ul > li {
  display: inline-block;
  position: relative;
  height: 60px;
  cursor: pointer;
}

nav a {
  color: rgba(165,175,185,1);
}

nav > ul > li > a {
  padding: 0 20px;
  height: 100%;
  line-height: 60px;
}

nav > ul > li:hover > a {
  color: rgba(105,115,125,1);
}

nav > ul > li:first-of-type {
  margin-right: auto;
}

.services-list-container {
  position: absolute;
  width: 200px;
  top: 100%;
  height: auto;
  opacity: 0;
  transform: rotateX(-20deg) scale(0.9,0.9);
	transform-origin: 0 0;
	transition: transform 0.4s ease, opacity 0.4s ease;
}

.services-list-container ul {
  background-color: white;
  box-shadow: 0 6px 16px rgba(40, 40, 90, 0.15);
  position: relative;
  margin-top: 30px;
}

.services-list-container a {
  padding: 20px;
  display: block;
}

.services-list-container a:hover {
  padding: 20px;
  display: block;
  background-color: rgba(235,240,245,1);
}
  
.hover:hover .services-list-container {
  transform: rotateX(0deg) scale(1,1);
	opacity: 1;
	transition: transform 0.4s ease, opacity 0.4s ease;
}
＆＃13; 
<nav>
  <ul>
    <li>
      <a href="#">[Logo]</a>
    </li>
    <li>
      <a href="#">About</a>
    </li>
    <li class="hover">
      <a href="#">Services</a>
      <div class="services-list-container">
        <ul>
          <li>
            <a href="#">Information</a>
          </li>
          <li>
            <a href="#">Technology</a>
          </li>
          <li>
            <a href="#">Training</a>
          </li>
          <li>
            <a href="#">Project Support</a>
          </li>
        </ul>
      </div>
    </li>
    <li>
      <a href="#">News</a>
    </li>
    <li>
      <a href="#">Jobs</a>
    </li>
    <li>
      <a href="#">Contact</a>
    </li>
  </ul>
</nav>
＆＃13;
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＆＃13;

4 个答案:

答案 0 :(得分：0)

请检查这是否是您想要的。隐藏子菜单，直到悬停发生。

＆＃13;
＆＃13; 
* {
  margin: 0;
  padding: 0;
  font-family: Montserrat;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

nav {
  background-color: white;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}

nav>ul>li {
  display: inline-block;
  position: relative;
  height: 60px;
  cursor: pointer;
}

nav a {
  color: rgba(165, 175, 185, 1);
}

nav>ul>li>a {
  padding: 0 20px;
  line-height: 60px;
}

nav>ul>li:hover>a {
  color: rgba(105, 115, 125, 1);
}

nav>ul>li:hover .services-list-container  {
  display: inline-block;
}

nav>ul>li:first-of-type {
  margin-right: auto;
}

.services-list-container {
  visibility: hidden;
  z-index: -1;
  position: absolute;
  width: 200px;
  top: 100%;
  opacity: 0;
  transition: opacity .4s ease;
}

.services-list-container ul {
  background-color: white;
  box-shadow: 0 6px 16px rgba(40, 40, 90, 0.15);
  position: relative;
}

.services-list-container a {
  padding: 20px;
  display: block;
}

.services-list-container a:hover  {
  background-color: rgba(235, 240, 245, 1);
}

.hover:hover .services-list-container {
  z-index: 0;
  visibility: visible;
  opacity: 1;
}
＆＃13; 
<nav>
  <ul>
    <li>
      <a href="#">[Logo]</a>
    </li>
    <li>
      <a href="#">About</a>
    </li>
    <li class="hover">
      <a href="#">Services</a>
      <div class="services-list-container">
        <ul>
          <li>
            <a href="#">Information</a>
          </li>
          <li>
            <a href="#">Technology</a>
          </li>
          <li>
            <a href="#">Training</a>
          </li>
          <li>
            <a href="#">Project Support</a>
          </li>
        </ul>
      </div>
    </li>
    <li>
      <a href="#">News</a>
    </li>
    <li>
      <a href="#">Jobs</a>
    </li>
    <li>
      <a href="#">Contact</a>
    </li>
  </ul>
＆＃13;
＆＃13;
＆＃13;

答案 1 :(得分：0)

并不是你在子元素上面盘旋，而是你的列表元素从高处如此高：60px，当你将鼠标悬停在单词之下时，它仍然会越过li元素。

答案 2 :(得分：0)

如果您定位支持浏览器，则可以使用pointer-events来阻止子菜单导致悬停鼠标事件

将元素pointer-events:none设为禁用

.services-list-container {
  pointer-events:none;
  position: absolute;
  width: 200px;
  top: 100%;
  height: auto;
  opacity: 0;
  transform: rotateX(-20deg) scale(0.9,0.9);
  transform-origin: 0 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

然后为了确保您仍然可以进入子菜单，请在您的.hover元素悬停时重置pointer-events 

.hover:hover .services-list-container {
  pointer-events:all;
  transform: rotateX(0deg) scale(1,1);
  opacity: 1;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

演示

＆＃13;
＆＃13; 
* {
  margin: 0;
  padding: 0;
  font-family: Montserrat;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

nav {
  background-color: white;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}

nav > ul > li {
  display: inline-block;
  position: relative;
  height: 60px;
  cursor: pointer;
}

nav a {
  color: rgba(165,175,185,1);
}

nav > ul > li > a {
  padding: 0 20px;
  height: 100%;
  line-height: 60px;
}

nav > ul > li:hover > a {
  color: rgba(105,115,125,1);
}

nav > ul > li:first-of-type {
  margin-right: auto;
}

.services-list-container {
  pointer-events:none;
  position: absolute;
  width: 200px;
  top: 100%;
  height: auto;
  opacity: 0;
  transform: rotateX(-20deg) scale(0.9,0.9);
	transform-origin: 0 0;
	transition: transform 0.4s ease, opacity 0.4s ease;
}

.services-list-container ul {
  background-color: white;
  box-shadow: 0 6px 16px rgba(40, 40, 90, 0.15);
  position: relative;
  margin-top: 30px;
}

.services-list-container a {
  padding: 20px;
  display: block;
}

.services-list-container a:hover {
  padding: 20px;
  display: block;
  background-color: rgba(235,240,245,1);
}
  
.hover:hover .services-list-container {
  pointer-events:all;
  transform: rotateX(0deg) scale(1,1);
	opacity: 1;
	transition: transform 0.4s ease, opacity 0.4s ease;
}
＆＃13; 
<nav>
  <ul>
    <li>
      <a href="#">[Logo]</a>
    </li>
    <li>
      <a href="#">About</a>
    </li>
    <li class="hover">
      <a href="#">Services</a>
      <div class="services-list-container">
        <ul>
          <li>
            <a href="#">Information</a>
          </li>
          <li>
            <a href="#">Technology</a>
          </li>
          <li>
            <a href="#">Training</a>
          </li>
          <li>
            <a href="#">Project Support</a>
          </li>
        </ul>
      </div>
    </li>
    <li>
      <a href="#">News</a>
    </li>
    <li>
      <a href="#">Jobs</a>
    </li>
    <li>
      <a href="#">Contact</a>
    </li>
  </ul>
</nav>
＆＃13;
＆＃13;
＆＃13;

答案 3 :(得分：0)

可见性的组合：隐藏;使用不透明度更改可以帮助您保留该动画，同时仍然阻止它在预期的菜单区域之外触发：

https://jsfiddle.net/4wg4sbqy/ CSS：

* {
      margin: 0;
      padding: 0;
      font-family: Montserrat;
    }

    li {
      list-style: none;
    }

    a {
      text-decoration: none;
    }

    nav {
      background-color: white;
      height: 60px;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    nav > ul > li {
      display: inline-block;
      position: relative;
      height: 60px;
      cursor: pointer;
    }

    nav a {
      color: rgba(165,175,185,1);
    }

    nav > ul > li > a {
      padding: 0 20px;
      height: 100%;
      line-height: 60px;
    }

    nav > ul > li:hover > a {
      color: rgba(105,115,125,1);
    }

    nav > ul > li:first-of-type {
      margin-right: auto;
    }

    .services-list-container {
      position: absolute;
      width: 200px;
      top: 100%;
      height: auto;
      opacity: 0;
      visibility: hidden;
      transform: rotateX(-20deg) scale(0.9,0.9);
        transform-origin: 0 0;
        transition: transform 0.4s ease, opacity 0.4s ease;
    }

    .services-list-container ul {

      background-color: white;
      box-shadow: 0 6px 16px rgba(40, 40, 90, 0.15);
      position: relative;
      margin-top: 30px;
    }

    .services-list-container a {
      padding: 20px;
      display: block;
    }

    .services-list-container a:hover {
      padding: 20px;
      display: block;
      background-color: rgba(235,240,245,1);
    }

    .hover:hover .services-list-container {
      visibility: visible;
      transform: rotateX(0deg) scale(1,1);
        opacity: 1;
        transition: transform 0.4s ease, opacity 0.4s ease;
    }

HTML：

   <nav>
  <ul>
    <li>
      <a href="#">[Logo]</a>
    </li>
    <li>
      <a href="#">About</a>
    </li>
    <li class="hover">
      <a href="#">Services</a>
      <div class="services-list-container">
        <ul>
          <li>
            <a href="#">Information</a>
          </li>
          <li>
            <a href="#">Technology</a>
          </li>
          <li>
            <a href="#">Training</a>
          </li>
          <li>
            <a href="#">Project Support</a>
          </li>
        </ul>
      </div>
    </li>
    <li>
      <a href="#">News</a>
    </li>
    <li>
      <a href="#">Jobs</a>
    </li>
    <li>
      <a href="#">Contact</a>
    </li>
  </ul>
</nav>
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