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<style type="text/css">


.demoSpan1 {
border-radius: 50px;
-webkit-border-radius: 50px;
-moz-border-radius: 50px;
border: 1px solid #333;
width: 32px;
height: 32px;
transform: rotate(225deg);
}

.demoSpan1:before,
.demoSpan1:after {
content: '';
height: 1px; /*左宽度*/
width: 13px; /*左长度*/
display: block;
background: #333;
border-radius: 10px;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
position: absolute;
top: 19px; /*右上高度*/
left: 7px; /*左上高度*/
}

.demoSpan1:after {
height: 12px; /*右长度*/
width: 1px; /*右宽度*/
top: 8px; /*右上高度*/
left: 19px; /*左上高度*/
}
</style>
<div class="demoSpan1"></div>