悬停时如何使引导按钮消失答案

【问题标题】：How can I make my bootstrap buttons fade when hovered悬停时如何使引导按钮消失
【发布时间】：2017-07-04 13:55:41
【问题描述】：

我刚开始使用引导程序，并在我的页面上创建了一些导航按钮，它们太棒了！但是当你将鼠标悬停在按钮上时，它会立即变为白色，但我希望它淡入白色。一旦您的鼠标不再悬停在按钮上，我也希望它淡化回蓝色。这怎么可能？

<!DOCTYPE html>

<html>
<head>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css"/>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css"/>
    <link rel="stylesheet" type="text/css" href="style.css" />
    <title>Home</title>
</head>  
<body>
  <div class="container-fluid">
  </div>
  
    <div class="container-fluid">
       <div class="col-md-4 col-lg-4 col-sm-4 col-xs-4">
            <ul class="nav nav-pills nav-stacked" role="tablist">
                    <img src="logo.png">
                    <li class="active"><a href="home.html">Home</a></li>
                    <li><a href="about.html">About</a></li>
                    <li><a href="projects.html">Projects</a></li>
                    <li><a href="contact.html">Contact</a></li>        
            </ul>
      </div>
      <div class="col-md-7 col-lg-7 col-xs-7 col-sm-7 col-lg-offset-1  col-md-offset-1 col-sm-offset-1 col-xs-offset-1 main">
             <p>This is the home page.</p>
          
      </div>
        
        <footer><i class="fa fa-html5"></i> <i class="fa fa-css3"></i></footer>
    </div>
</body>
</html>

【问题讨论】：

标签： html css twitter-bootstrap button hover

【解决方案1】：

只需将 CSS transition 添加到像 sn-p 这样的锚点：

.nav-pills li a{
   /* 0.5s is the amount of time it take to change colors */
   transition: 0.5s background ease-in-out;
}

<!DOCTYPE html>

<html>
<head>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css"/>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css"/>
    <link rel="stylesheet" type="text/css" href="style.css" />
    <title>Home</title>
</head>  
<body>
  <div class="container-fluid">
  </div>
  
    <div class="container-fluid">
       <div class="col-md-4 col-lg-4 col-sm-4 col-xs-4">
            <ul class="nav nav-pills nav-stacked" role="tablist">
                    <img src="logo.png">
                    <li class="active"><a href="home.html">Home</a></li>
                    <li><a href="about.html">About</a></li>
                    <li><a href="projects.html">Projects</a></li>
                    <li><a href="contact.html">Contact</a></li>        
            </ul>
      </div>
      <div class="col-md-7 col-lg-7 col-xs-7 col-sm-7 col-lg-offset-1  col-md-offset-1 col-sm-offset-1 col-xs-offset-1 main">
             <p>This is the home page.</p>
          
      </div>
        
        <footer><i class="fa fa-html5"></i> <i class="fa fa-css3"></i></footer>
    </div>
</body>
</html>

【讨论】：

由于某种原因，当我将时间从 0.5 秒更改为 0.1 秒甚至 0.01 秒时，它似乎并没有更快地淡入淡出。
可能是你的css被缓存了，试试ctrl+shift+r

【解决方案2】：

您想要transition background 属性。你可以用.nav a { transition: background .25s; }来做到这一点

<!DOCTYPE html>

<html>
<head>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css"/>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css"/>
    <link rel="stylesheet" type="text/css" href="style.css" />
    <title>Home</title>
    <style>
    .nav a {
      transition: background .25s;
    }
    </style>
</head>  
<body>
  <div class="container-fluid">
  </div>
  
    <div class="container-fluid">
       <div class="col-md-4 col-lg-4 col-sm-4 col-xs-4">
            <ul class="nav nav-pills nav-stacked" role="tablist">
                    <img src="logo.png">
                    <li class="active"><a href="home.html">Home</a></li>
                    <li><a href="about.html">About</a></li>
                    <li><a href="projects.html">Projects</a></li>
                    <li><a href="contact.html">Contact</a></li>        
            </ul>
      </div>
      <div class="col-md-7 col-lg-7 col-xs-7 col-sm-7 col-lg-offset-1  col-md-offset-1 col-sm-offset-1 col-xs-offset-1 main">
             <p>This is the home page.</p>
          
      </div>
        
        <footer><i class="fa fa-html5"></i> <i class="fa fa-css3"></i></footer>
    </div>
</body>
</html>

【讨论】：