
/*此处css为向上带阴影的三角,用于气泡箭头*/
.popup:after {
content: '';
position: absolute;
width: 0;
height: 0;
top: -10px;
right: 42px;
border-style: solid;
border-width: 10px;
border-color: transparent transparent #fff #fff;
transform: rotate(135deg);
-webkit-box-shadow: -2px 2px 3px 0 rgba(0, 0, 0, 0.2);
-moz-box-shadow: -2px 2px 3px 0 rgba(0, 0, 0, 0.2);
box-shadow: -2px 2px 3px 0 rgba(0, 0, 0, 0.2);
}
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