懸停錯誤：在Safari上之前

Question

我在導航鏈接上使用下劃線懸停效果。當我懸停在Safari上時，第一個懸停背景會根據我的CSS出現，但比我看到橙色背景。我發現如果我刪除僞元素的高度，這個橙色背景不可見。

@mixin underline-reveal { 

    vertical-align: middle; 
    -webkit-transform: translateZ(0); 
    transform: translateZ(0); 
    box-shadow: 0 0 1px rgba(0, 0, 0, 0); 
    -webkit-backface-visibility: hidden; 
    backface-visibility: hidden; 
    -moz-osx-font-smoothing: grayscale; 
    position: relative; 
    overflow: hidden; 
    } 


    @mixin underline-reveal-before ($color) { 
    content: ""; 
    position: absolute; 
    z-index: -1; 
    left: 0; 
    right: 0; 
    bottom: 0; 
    background-color: $color; 
    height: 3px; 
    -webkit-transform: translateY(4px); 
    transform: translateY(4px); 
    -webkit-transition-property: transform; 
    transition-property: transform; 
    -webkit-transition-duration: 0.3s; 
    transition-duration: 0.3s; 
    -webkit-transition-timing-function: ease-out; 
    transition-timing-function: ease-out; 
    } 

Answer 1

一般最好的解決方法是添加-webkit變換：在具有在Safari過渡元素translate3d（0,0,0）。

在我的情況：

ul { 
    @include menu-base; 
    background-color: $blue; 
    line-height: 2.5; 

    > li { 
     display: inline-block; 

     > a { 
      @include mainnav-align-a; 
      @include underline-reveal; 
     } 

     > a::before { 
      @include underline-reveal-before (#EDEDED); 
      height: 3px; 
     } 

     > a:focus, 
     > a:hover { 
      background-color: $hover-blue; 
     } 

     > a:focus::before, 
     > a:hover::before { 
      -webkit-transform: translateY(0px); 
      transform: translateY(0px); 
       <!--Fix bugs ON Safari--> 
      -webkit-transform: translate3d(0, 0, 0); 
     } 

     a.active:before { 
      display: none; 
     } 
    } 
}