首先，根據HTML裡面的標籤，我們先設定一個公共樣式
#*{padding:0;margin:0;}
html,body{font-size:12px;font-family:"宋體";outline:none;color:#666;background:#fff;}
# ul,ol{list-style:none;}
img{border:none;outline:none;}
a{color: #666;text-decoration:none;outline:none;}
a:hover{color:#e8431f;}
#然後根據class或id值定義特定樣式
body{height:3000px;}
#floatDivBoxs{width:170px ;background:#fff;position:fixed;top:100px;right:0;z-index:999;}
#floatDivBoxs .floatDtt{width:100%;height:45px ;line-height:45px; background:#f08326;color:#fff;font-size:18px;text-indent:22px;position:relative;}
#floatDivBoxs .floatDqqq {padding:0 14px;}
#floatDivBoxs .floatDqq li{height:45px;line-height:45px;font-size:15px;border-bottom:1pxsolid #e3e3e3; padding-left:0px;}
#floatDivBoxs .floatDtxt{font-size:18px;color:#333;padding:12px 14px;}
################################################################################################################################### ###.floatShadow{ background:#fff;box-shadow:-2px 0 3px rgba(0,0,0,0.25);}##############rightArrow{width:50px; height:45px;background:url(https://img.php.cn/upload/image/380/320/544/1478308842480674.jpg) no-repeat;position:fixed;top:100pxright:170px;right:170pxz- index:999;}#############rightArrow a{display:block;height:45px;}############## 完整程式碼如下：# ########
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="format-detection" content="telephone=no" />
<title>QQ客服</title>
<style>
/* 公共样式定义 */
*{padding:0;margin:0;}
html,body{font-size:12px;font-family:"宋体";outline:none;color:#666;background:#fff;}
ul,ol{list-style:none;}
img{border:none;outline:none;}
a{color:#666;text-decoration:none;outline:none;}
a:hover{color:#e8431f;}
/*根据class或者id值定义样式*/
body{height:3000px;}
#floatDivBoxs{width:170px;background:#fff;position:fixed;top:100px;right:0;z-index:999;}
#floatDivBoxs .floatDtt{width:100%;height:45px;line-height:45px; background:#f08326;color:#fff;font-size:18px;text-indent:22px;position:relative;}
#floatDivBoxs .floatDqq{padding:0 14px;}
#floatDivBoxs .floatDqq li{height:45px;line-height:45px;font-size:15px;border-bottom:1px solid #e3e3e3;padding-left:0px;}
#floatDivBoxs .floatDtxt{font-size:18px;color:#333;padding:12px 14px;}
.floatShadow{ background:#fff;box-shadow:-2px 0 3px rgba(0,0,0,0.25);}
#rightArrow{width:50px;height:45px;background:url(https://img.php.cn/upload/image/380/320/544/1478308842480674.jpg) no-repeat;position:fixed;top:100px;right:170px;z-index:999;}
#rightArrow a{display:block;height:45px;}
</style>
</head>
<body>
<div id="rightArrow"><a href="#" title="在线客户"></a></div>
<div id="floatDivBoxs">
<div class="floatDtt">在线客服</div>
<div class="floatShadow">
<ul class="floatDqq">
<li ><a target="_blank" href="tencent://message/?uin=126401073&Site=sc.chinaz.com&Menu=yes"><img src="https://img.php.cn/upload/image/477/494/683/1478309332960894.png" > 在线客服1</a></li>
<li ><a target="_blank" href="tencent://message/?uin=126401073&Site=sc.chinaz.com&Menu=yes"><img src="https://img.php.cn/upload/image/477/494/683/1478309332960894.png" > 在线客服2</a></li>
<li ><a target="_blank" href="tencent://message/?uin=126401073&Site=sc.chinaz.com&Menu=yes"><img src="https://img.php.cn/upload/image/477/494/683/1478309332960894.png" > 在线客服3</a></li>
</ul>
<div class="floatDtxt">热线电话<br/>0551-123456789</div>
</div>
</div>
</body>
</html>#########大家可以嘗試修改其中的部分樣式，看看會有什麼變化##########下一節