html - 当悬停 p 元素时尝试显示 div 元素时，我的 CSS 无法正常工作

Question

我的网站上有一个下拉导航系统，它工作正常，但我注意到当我将鼠标悬停在下拉文本下方时，它仍然会显示下拉菜单。 ( jsfiddle of before ) 我想改变它，所以我尝试将 #dropdown:hover #dropdown-content 更改为 #dropdown p:hover #dropdown-content。但我没有得到任何结果。

#nav-container {
  display: table;
  margin: 0 auto;
}

#navigation {
  height: 100px;
  padding: 10px 3px 3px;
  background-color: #D3D3D3;
  position: sticky;
}

#nav-items {
  list-style-type: none;
  margin-left: -45px;
}

#nav-items li {
  display: inline-block;
  vertical-align: top;
  width: 400px;
}

#group1 {
    display: inline-block;
}

#dropdown {
  display: inline-block;
  position: relative;
  text-align: center;
}

#dropdown p { 
  font-family: 'Work Sans', sans-serif; 
  font-size: 35px;
  letter-spacing: 5px;
  margin: auto auto auto auto;
}

#dropdown-content {
  position: absolute;
  margin: 10px auto auto auto;
  left: 0;
  right: 0;
  opacity: 0;
  height: auto;
  background-color: #575757; 
  border-radius: 8px;
  box-shadow: 0px 0px 6px 0px #D3D3D3;
  z-index: 1;
  overflow-y: hidden;
  transition-property: all;
  transition-duration: 0.5s;
  transition-timing-function: cubic-bezier(0, 1, 0.5, 1);
}

#dropdown-content img {
  margin-bottom: 5px;
  user-drag: none; 
    user-select: none;
    -moz-user-select: none;
    -webkit-user-drag: none;
    -webkit-user-select: none;
    -ms-user-select: none;
}

.nav-dropdown-container {width: 400px;}

#dropdown-content p {
  font-size: 20px;
  font-family: 'Work Sans', sans-serif; 
  font-size: 30px;
  letter-spacing: 2px;
}

#dropdown p:hover #dropdown-content {  /* CHANGES HERE */
  opacity: 1;
  max-height: 500px;
  padding-top: 1em;
    padding-bottom: 1em;
  -webkit-transition: max-height 0.5s ease-in-out;
    -moz-transition: max-height 0.5s ease-in-out;
    -o-transition: max-height 0.5s ease-in-out;
    transition: max-height 0.5s ease-in-out;
  -webkit-transition: all 0.5s ease-in-out;
    -moz-transition: all 0.5s ease-in-out;
    -o-transition: all 0.5s ease-in-out;
    transition: all 0.5s ease-in-out;
    display: block;
}

<nav id="navigation">
  <div id="nav-container">
    <center>
      <ul id="nav-items">
        <li>
          <div id="group1">
            <div class="nav-dropdown-container">
              <div id="dropdown">
                <p>Test</p>
                <div id="dropdown-content">
                  <p>Test</p>
                </div>
              </div>
            </div>
          </div>
        </li>
      </ul>
    </center>
  </div>
</nav>

我已经尝试了所有方法，从将 p 元素放入它自己的 div 到将 p 元素放入 ul 元素。任何帮助，将不胜感激。

Answer 1

你应该使用这个 CSS 选择器 #dropdown>p:hover ~ #dropdown-content :

#nav-container {
	display: table;
	margin: 0 auto;
}

#navigation {
	height: 100px;
	padding: 10px 3px 3px;
	background-color: #D3D3D3;
	position: sticky;
}

#nav-items {
	list-style-type: none;
	margin-left: -45px;
}

#nav-items li {
	display: inline-block;
	vertical-align: top;
	width: 400px;
}

#group1 {
  display: inline-block;
}

#dropdown {
	display: inline-block;
	position: relative;
	text-align: center;
}

#dropdown p { 
	font-family: 'Work Sans', sans-serif; 
	font-size: 35px;
	letter-spacing: 5px;
	margin: auto auto auto auto;
}

#dropdown-content {
	position: absolute;
	margin: 10px auto auto auto;
	left: 0;
	right: 0;
	opacity: 0;
	height: auto;
	background-color: #575757; 
	border-radius: 8px;
	box-shadow: 0px 0px 6px 0px #D3D3D3;
	z-index: 1;
	overflow-y: hidden;
	transition-property: all;
	transition-duration: 0.5s;
	transition-timing-function: cubic-bezier(0, 1, 0.5, 1);
}

#dropdown-content img {
	margin-bottom: 5px;
	user-drag: none; 
    user-select: none;
    -moz-user-select: none;
    -webkit-user-drag: none;
    -webkit-user-select: none;
    -ms-user-select: none;
}

.nav-dropdown-container {width: 400px;}

#dropdown-content p {
	font-size: 20px;
	font-family: 'Work Sans', sans-serif; 
	font-size: 30px;
	letter-spacing: 2px;
}

#dropdown>p:hover ~ #dropdown-content {
	opacity: 1;
	max-height: 500px;
	padding-top: 1em;
  	padding-bottom: 1em;
	-webkit-transition: max-height 0.5s ease-in-out;
    -moz-transition: max-height 0.5s ease-in-out;
    -o-transition: max-height 0.5s ease-in-out;
    transition: max-height 0.5s ease-in-out;
	-webkit-transition: all 0.5s ease-in-out;
    -moz-transition: all 0.5s ease-in-out;
    -o-transition: all 0.5s ease-in-out;
    transition: all 0.5s ease-in-out;
}


#dropdown:hover #dropdown-content {
	display: block;
}

<nav id="navigation">
  <div id="nav-container">
    <center>
      <ul id="nav-items">
        <li>
          <div id="group1">
            <div class="nav-dropdown-container">
              <div id="dropdown">
                <p>Test</p>
                <div id="dropdown-content">
                  <p>Test</p>
                </div>
              </div>
            </div>
          </div>
        </li>
      </ul>
    </center>
  </div>
</nav>