Question

.dropbtn按钮具有附加的样式，以便将鼠标悬停在其上时，通过向该元素添加不透明度来显示.dropdown-content div。但是，将鼠标悬停在显示.dropdown-content的按钮下方的位置上似乎触发了仅当我将鼠标悬停在.dropbtn上时才发生的悬停。为什么会这样呢？

有一些“解决方案”，例如将overflow：hidden添加到.dropdown，然后将其与悬停一起添加回去，但这会影响我附加到.dropdown-content的转换。将display：none和display：block添加到.dropdown内容也会破坏我想要的变换效果。

* {
	font-family:sans-serif;
}
body {
	background-image:linear-gradient(to right,#42b4ce,#fd3838);
}
.dropbtn {
  background:none;
  color: white;
  font-size: 16px;
  border: none;
  cursor:pointer;
  padding:0 0 10px;
}

.dropdown {
  position: relative;
  width: 160px;
  margin: 0 auto;
  display: block;
  
}

.dropdown-content {
  opacity:0;
  position: absolute;
  background-color: #f1f1f1;
  min-width: 400px;
  right:-80px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: -1;
  transform-origin: top center;
  transform:rotate3d(-40, 4, 1.5, 45deg);
  transition:.2s;
  border-radius:10px;
}

.dropdown-content a {
  color: black;
  padding: 10px 14px;
  text-decoration: none;
  display: block;
}

.dropdown-content a:hover {color: purple;}

.dropdown:hover .dropdown-content {
	opacity:1;
	transform:rotate3d(0, 0, 0, 40deg);
	z-index:0;
}

.dropdown:hover .dropbtn {text-shadow:1px 1px 2px rgba(0,0,0,0.6)};

<body>
  <div class="dropdown">
      <button class="dropbtn">Dropdown</button>
      <div class="dropdown-content">
        <a href="#">Link 1</a>
        <a href="#">Link 2</a>
        <a href="#">Link 3</a>
      </div>
    </div>
</body>

Answer 1

将visibility: hidden;添加到.dropdown-content类中，并将visibility: visible悬停在.dropdown上。参见下面的代码。

* {
	font-family:sans-serif;
}
body {
	background-image:linear-gradient(to right,#42b4ce,#fd3838);
}
.dropbtn {
  background:none;
  color: white;
  font-size: 16px;
  border: none;
  cursor:pointer;
  padding:0 0 10px;
}

.dropdown {
  position: relative;
  width: 160px;
  margin: 0 auto;
  display: block;
  
}

.dropdown-content {
  opacity:0;
  position: absolute;
  background-color: #f1f1f1;
  min-width: 400px;
  right:-80px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: -1;
  transform-origin: top center;
  transform:rotate3d(-40, 4, 1.5, 45deg);
  transition:.2s;
  border-radius:10px;
  visibility: hidden;
}

.dropdown-content a {
  color: black;
  padding: 10px 14px;
  text-decoration: none;
  display: block;
}

.dropdown-content a:hover {color: purple;}

.dropdown:hover .dropdown-content {
	opacity:1;
	transform:rotate3d(0, 0, 0, 40deg);
	z-index:0;
    visibility: visible;
}

.dropdown:hover .dropbtn {text-shadow:1px 1px 2px rgba(0,0,0,0.6)};

<body>
  <div class="dropdown">
      <button class="dropbtn">Dropdown</button>
      <div class="dropdown-content">
        <a href="#">Link 1</a>
        <a href="#">Link 2</a>
        <a href="#">Link 3</a>
      </div>
    </div>
</body>

Answer 2

只需为pointer-events: none;添加.dropdown-content，为选择器pointer-events: auto添加.dropdown:hover .dropdown-content

Demo

防止因错误元素触发的悬停效果

2 个答案: