html - 当我尝试选择任何元素时，下拉菜单会隐藏。??(CSS)

Question

嗨，我知道这个问题已经被问过好几次了，但我无法弄清楚我在代码中做错了什么。当我将鼠标悬停在APPLIANCES上时，我的下拉 block 显示perfecteley，但是一旦我尝试选择任何元素DROP DOWN DISAPPER。下面是我的代码:-

HTML:-

    #nav_wrapper
    {
        
        
        position: relative;
        top: 70px;
        left: 100px;
        
    }
    #nav_wrapper ul{
     list-style-type: none;   
     }
     
     #nav_wrapper ul li{
         outline: 1px solid white;
         width: 160px;
         text-align: center;
         position: relative;
         float: left;
         background: black;
         z-index: 1000;
         
     }
     #nav_wrapper ul li a{
         text-decoration: none;
         display: inline-block;
         height: 25px;
         width: 160px;
         padding-top: 5px;
         color: #DAA520;
         font-family: cursive;
         
     }
    
     
     
     #nav_wrapper ul ul.one
     {
         display: none;
     }
     #nav_wrapper ul li a:hover {
          color: wheat; 
          
     }
     
     
     #nav_wrapper ul li a:hover + ul.one {
         display: inline-block;
         height: 25px;
         
     }

<div id="nav_wrapper">
                       <ul>
                           <li><a href="#">ELECTRONICS</a>
                               
                           </li> 
                           <li><a href="#">APPLIANCES</a>
                           <ul class="one">
                                  <li><a href="#">TV</a></li>
                                  <li><a href="#">WASHING MACHINE</a></li>
                             </ul>
                               </li>
                           <li><a href="#">MEN</a></li>
                           <li><a href="#">WOMEN</a></li>
                           <li><a href="#">BABY&KIDS</a></li>
                           <li><a href="#">HOME&FURNITURE</a></li>
                           <li><a href="#">BOOKS&MORE</a></li>
                           
                       </ul>
                 
               </div>
    


     

有人可以帮我吗？

Answer 1

下面是代码..刚刚更改了悬停CSS.. 我的代码正在运行，请参见图片..

#nav_wrapper ul li:hover > ul.one {
  display: inline-block;
  height: 25px;
}

#nav_wrapper {
  position: relative;
  top: 70px;
  left: 100px;
}
#nav_wrapper ul {
  list-style-type: none;
}
#nav_wrapper ul li {
  outline: 1px solid white;
  width: 160px;
  text-align: center;
  position: relative;
  float: left;
  background: black;
  z-index: 1000;
}
#nav_wrapper ul li a {
  text-decoration: none;
  display: inline-block;
  height: 25px;
  width: 160px;
  padding-top: 5px;
  color: #DAA520;
  font-family: cursive;
}
#nav_wrapper ul ul.one {
  display: none;
}
#nav_wrapper ul li a:hover {
  color: wheat;
}
#nav_wrapper ul li:hover > ul.one {
  display: inline-block;
  height: 25px;
}

<div id="nav_wrapper">
  <ul>
    <li><a href="#">ELECTRONICS</a>

    </li>
    <li><a href="#">APPLIANCES</a>
      <ul class="one">
        <li><a href="#">TV</a>
        </li>
        <li><a href="#">WASHING MACHINE</a>
        </li>
      </ul>
    </li>
    <li><a href="#">MEN</a>
    </li>
    <li><a href="#">WOMEN</a>
    </li>
    <li><a href="#">BABY&KIDS</a>
    </li>
    <li><a href="#">HOME&FURNITURE</a>
    </li>
    <li><a href="#">BOOKS&MORE</a>
    </li>

  </ul>

</div>