我的纯CSS下拉列表无法正常工作,有人知道如何修复它吗?

时间:2016-10-24 19:36:54

标签: css dropdown

我是一个CSS启动器,我的纯CSS下拉列表无效。

此jsfiddle中的示例:https://jsfiddle.net/uevewfsy/

我一直在互联网上四处寻找并尝试自己解决这个问题,但我尝试了无数的东西,但仍然没有修复。浮动:左;在初级ul似乎修复它,但然后我的导航不再居中。

希望有人可以帮助我,以便我可以再次进行编程;)

* {
    padding: 0;
    margin: 0;
    border: 0;
}

html, body {
    height: 100%;
    width: 100%;
    font-family: 'Open Sans', sans-serif;
}

h1 {
    font-weight: 100;
}

.nav {
    width: 100%;
    height: 10%;
    background-color: #333;
    text-align: center;
    position: fixed;
    z-index: 150;
}

.nav ul {
    height: 100%;
    width: 100%;
}

.nav > ul > li {
    display: inline-block;
    list-style: none;
    margin: 0 20px 0 20px;
}

.nav > ul > li:first-child > a:after {
    width: 6px;
    height: 6px;
    border-bottom: 1px solid white;
    border-right: 1px solid white;
    position: absolute;
    margin-top: calc(5vh - 5px);
    margin-left: 8px;
    content: "";
    transform: rotate(45deg);
}

.nav > ul > li > ul {
    display: none;
}

.nav > ul > li > ul > li {
    list-style: none;
    background-color: #333;
    padding: 0 15px 0 15px;
}

.nav li:hover > ul {
    display: block;
}

.nav ul a {
    color: #A3ABA3;
    text-decoration: none;
    line-height: 10vh;
}

.nav a:hover {
    color: #FFF;
}

@media only screen and (max-device-width: 480px){
    
}
<body>
   <div class="nav">
       <ul>
           <li>
               <a href="#">PAGE</a>
               <ul>
                   <li><a href="#">DROPDOWN</a></li>
                   <li><a href="#">DROPDOWN</a></li>
               </ul>
           </li>
           <li><a href="#">PAGE</a></li>
           <li><a href="#">PAGE</a></li>
           <li><a href="#">PAGE</a></li>
       </ul>
   </div>
</body>

1 个答案:

答案 0 :(得分:0)

您在vertical-align:top

中遗漏了nav > ul > li

您也可以position:relative/top添加li/ul

* {
  padding: 0;
  margin: 0;
  border: 0;
}
html,
body {
  height: 100%;
  width: 100%;
  font-family: 'Open Sans', sans-serif;
}
h1 {
  font-weight: 100;
}
.nav {
  width: 100%;
  height: 10%;
  background-color: #333;
  text-align: center;
  position: fixed;
  z-index: 150;
}
.nav ul {
  height: 100%;
  width: 100%;
}
.nav > ul > li {
  display: inline-block;
  list-style: none;
  padding: 0 20px;
  vertical-align: top
}
.nav > ul > li:first-child > a:after {
  width: 6px;
  height: 6px;
  border-bottom: 1px solid white;
  border-right: 1px solid white;
  position: absolute;
  margin-top: calc(5vh - 5px);
  margin-left: 8px;
  content: "";
  transform: rotate(45deg);
}
.nav > ul > li > ul {
  display: none;
}
.nav > ul > li > ul > li {
  list-style: none;
  background-color: #333;
  padding: 0 15px;
  position:relative
}
.nav li:hover > ul {
  display: block;
  position:absolute;
  top:100%;
  width:30%
    
  
}
.nav ul a {
  color: #A3ABA3;
  text-decoration: none;
  line-height: 10vh;
}
.nav a:hover {
  color: #FFF;
}
@media only screen and (max-device-width: 480px) {}
<body>
  <div class="nav">
    <ul>
      <li>
        <a href="#">PAGE</a>
        <ul>
          <li><a href="#">DROPDOWN</a>
          </li>
          <li><a href="#">DROPDOWN</a>
          </li>
        </ul>
      </li>
      <li><a href="#">PAGE</a>
      </li>
      <li><a href="#">PAGE</a>
      </li>
      <li><a href="#">PAGE</a>
      </li>
    </ul>
  </div>
</body>