HTML5+CSS3小实例：菜单栏图标悬停效果HTML5+CSS3实现菜单栏图标悬停效果，紫色的tabbar标签栏，默认

HTML5+CSS3实现菜单栏图标悬停效果，紫色的tabbar标签栏，默认显示图标，鼠标悬停图标上移，显示文字，过程伴随细微动画，字体图标用的是font-awesome。

效果：

源码：

<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">

    <title>菜单栏图标悬停效果</title>
    <link href="https://cdn.bootcdn.net/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
    <link rel="stylesheet" href="../css/14.css">
</head>

<body>
    <nav class="nav">
        <ul class="menu">
            <li class="item">
                <a href="#" class="link">
                    <i class="fa fa-home" aria-hidden="true"></i>
                    <span>首页</span>
                </a>
            </li>
            <li class="item">
                <a href="#" class="link">
                    <i class="fa fa-heart" aria-hidden="true"></i>
                    <span>动态</span>
                </a>
            </li>
            <li class="item">
                <a href="#" class="link">
                    <i class="fa fa-plus-circle" aria-hidden="true"></i>
                    <span>发布</span>
                </a>
            </li>
            <li class="item">
                <a href="#" class="link">
                    <i class="fa fa-bell" aria-hidden="true"></i>
                    <span>消息</span>
                </a>
            </li>
            <li class="item">
                <a href="#" class="link">
                    <i class="fa fa-user" aria-hidden="true"></i>
                    <span>我的</span>
                </a>
            </li>
        </ul>
    </nav>
</body>

</html>

*{
    /* 初始化 取消页面元素内外边距 */
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    /* 100%窗口高度 */
    height: 100vh;
    /* 弹性布局 水平、垂直居中 */
    display: flex;
    justify-content: center;
    align-items: center;
    /* 渐变背景 */
    background: linear-gradient(200deg,#eef1f5,#e6e9f0);
}
.nav{
    display: flex;
    background-color: #b7a1eb;
    height: 100px;
    border-radius: 20px;
    /* 溢出隐藏 */
    overflow: hidden;
    /* 阴影 */
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}
.nav .menu{
    list-style: none;
    display: flex;
    justify-content: center;
}
.nav .menu .item{
    position: relative;
    cursor: pointer;
    padding: 0 10px;
    width: 150px;
    height: 100%;
    /* 动画过渡 */
    transition: ease 0.4s;
}
.nav .menu .item:hover{
    background-color: #a38bdb;
}
.nav .menu .item .link{
    display: block;
    position: relative;
    width: 100%;
    height: 100px;
    color: #fff;
    text-decoration: none;
    overflow: hidden;
    transition: ease 0.4s;
}
.nav .menu .item .link span{
    position: absolute;
    width: 100%;
    bottom: -50%;
    left: 0;
    text-align: center;
    opacity: 0;
    transition: ease 0.4s;
}
.nav .menu .item .link .fa{
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100%;
    text-align: center;
    font-size: 32px;
    transition: ease 0.4s;
}
.nav .menu .item:hover .link span{
    /* 鼠标移入文本出现、上移 */
    opacity: 1;
    bottom: 18px;
}
.nav .menu .item:hover .link .fa{
    /* 鼠标移入图标上移 */
    transform: translateY(-95%);
}