来不及了，直接贴代码。

HTML代码

<div class="user-bio">
	<div class="user-bio-top">
		<div class="circle-red"></div>
		<div class="circle-yellow"></div>
		<div class="circle-green"></div>
	</div>
	<div class="user-bio-body">
		Wait,i know you<br>
		keep hungry keep foolish<br>
		苍苍之天不可得久视，堂堂之地不可得久履，道此绝矣！<br/>
		告后世及其孙子，忽忽锡锡，恐见故里，毋负天地，<br>
		更亡更在，去如舍庐，下敦闾里！人固当死，慎毋敢佞。
	</div>
</div>

CSS代码

主要是三个圆点

.user-bio {
    font-size: 14px;
    color: #6a737d;
}
.user-bio .user-bio-top {
    height: 15px;
    background-color: #E3E3E3;
    padding: 8px 12px;
    border-top-left-radius: 3px;
    border-top-right-radius: 3px;
}
.user-bio .user-bio-body {
    background-color: #EEEEEE;
    width: 100%;
    font-size: 13px;
    color: #666666;
    overflow: auto;
    padding: 20px;
    font-family: "Source Code Pro", Consolas, Menlo, Monaco, "Courier New", monospace;
}
.user-bio .user-bio-top div{
    float: left;
    margin-right: 10px;
    width:13px;
    height:13px;
    background-color:#FF5F57;
    border-radius:50px;
}
.user-bio .user-bio-top .circle-yellow{
    float: left;
    margin-right: 10px;
    width:13px;
    height:13px;
    background-color:#FFBD2E;
    border-radius:50px;
}
.user-bio .user-bio-top .circle-green{
    float: left;
    margin-right: 10px;
    width:13px;
    height:13px;
    background-color:#28CA42;
    border-radius:50px;
}

最终效果