如图，点击每条信息可以实现删除这条信息的效果。
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.cb {
display: none;
}
.mark {
position: relative;
display: inline-block;
20px;
height: 20px;
border: 2px solid transparent;
}
.mark:before {
content: "";
display: none;
position: absolute;
top:50%;
left: 25%;
height: 4px;
8px;
border: solid black;
border- 0 0 4px 4px;
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
}/*画√，这是呈现在页面的钩钩*/
.cb:checked~ .mark:before {
display: block;
}
.cb:checked~ .con {
text-decoration: line-through;
}
</style>
</head>
<body>
<fieldset>
<label>
<input type="checkbox" class="cb" checked>
<span class="mark"></span>
<span class="con">this is a test</span>
</label>
<br>
<label>
<input type="checkbox" class="cb">
<span class="mark"></span>
<span class="con">this is a test</span>
</label>
<br>
<label>
<input type="checkbox" class="cb">
<span class="mark"></span>
<span class="con">this is a test</span>
</label>
</fieldset>
</body>
</html>