鼠標懸停時更改字體真棒圖標的顏色

Question

我在輸入文本框中有圖標。 當我將鼠標懸停在圖標上時，我想更改圖標的顏色。我嘗試了一下，但是那不起作用。

在我的代碼下面。

<div class="row">
        <span class="fa fa-envelope" style="position: absolute; top: 10px; left: -5px; color: black"></span>
        <span class="fa fa-file" style="position: absolute; top: 10px; left: 20px; color: black"></span>
        <span class="fa fa-calendar" style="position: absolute; top: 10px; left: 42px; color: black"></span>
        <span class="fa fa-bar-chart" style="position: absolute; top: 10px; left: 65px; color: black"></span>
        <input id="Text1" class="col-md-8" type="text" placeholder="Send Message" style="padding: 30px; border: 1px solid #aaa />
    </div>

我需要解決該問題的方法。

Answer 1

使用內聯樣式意味着必須使用!important覆蓋black的默認狀態：

 span:hover { color: green !important; } 

 <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet"/> <div class="row"> <span class="fa fa-envelope" style="position: absolute; top: 10px; left: -5px; color: black"></span> <span class="fa fa-file" style="position: absolute; top: 10px; left: 20px; color: black"></span> <span class="fa fa-calendar" style="position: absolute; top: 10px; left: 42px; color: black"></span> <span class="fa fa-bar-chart" style="position: absolute; top: 10px; left: 65px; color: black"></span> <input id="Text1" class="col-md-8" type="text" placeholder="Send Message" style="padding: 30px; border: 1px solid #aaa /> </div> 

更好的解決方案可能如下所示：

 .fa { position: absolute; top: 10px; color: black; } .fa:nth-child(1) { left: -5px; } .fa:nth-child(2) { left: 20px; } .fa:nth-child(3) { left: 42px; } .fa:nth-child(4) { left: 65px; } .fa:hover { color: green; } 

 <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet" /> <div class="row"> <span class="fa fa-envelope"></span> <span class="fa fa-file"></span> <span class="fa fa-calendar"></span> <span class="fa fa-bar-chart"></span> <input id="Text1" class="col-md-8" type="text" placeholder="Send Message" style="padding: 30px; border: 1px solid #aaa" /> </div> 

Answer 2

我寧願建議刪除內聯color: black ，並用css樣式替換。 盡量避免使用!important對吧？

 .fa{ color: black } .fa:hover{ color:blue; } 

 <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.css" rel="stylesheet"/> <div class="row"> <span class="fa fa-envelope" style="position: absolute; top: 10px; left: -5px;"></span> <span class="fa fa-file" style="position: absolute; top: 10px; left: 20px;"></span> <span class="fa fa-calendar" style="position: absolute; top: 10px; left: 42px;"></span> <span class="fa fa-bar-chart" style="position: absolute; top: 10px; left: 65px;"></span> <input id="Text1" class="col-md-8" type="text" placeholder="Send Message" style="padding: 30px; border: 1px solid #aaa /> </div>