在Microsoft Edge浏览器中,悬停元素border-bottom后设置底部元素的颜色.错误？看看jsfiddle：
https://jsfiddle.net/Experimenter/65eLh89r/

a{
    display: block;
    background: blue;
    padding: 10px 30px;
    color: rgba(255,255,0.5);
    border-bottom: 1px solid gray;
}
a:hover{
    color: white;
}