爲了實現qq郵箱app的郵件顯示效果，就是哪個郵件左邊的圖案，當沒有找到對應logo時，以主題頭一個字作爲logo
代碼如下：
<html>
<head>
<title>圓圈</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<style type="text/css">
.circle {
width: 25px;
height: 25px;
border-style: solid;
border-width: 1px;
border-radius: 50%;
-moz-border-radius: 50%; -webkit-border-radius : 50%;
border-color: #1E90FF;
-webkit-border-radius: 50%;
}
.circle-text {
font-family:"黑體",Helvetica,"Arial","Microsoft YaHei","宋體",sans-serif;;
width: 25px;
height: 25px;
line-height: 25px;
text-align: center;
font-size: 15px;
font-weight:normal;
color: #1E90FF;
}
</style>
</head>
<body>
<div class="circle">
<div class='circle-text'>京</div>
</div>
<br>
<div class="circle">
<div class='circle-text'>Pa</div>
</div>
</body>
</html>
效果
