查看“模板:机场线标”的源代码

{{#css:
#metro-line-tag a {
color: white;
}
}}
<div id="metro-line-tag" style="
    display: inline-block;
    text-align: center;
    background: #8957a1;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    font-size: 14px;
    line-height: 17px;
    color: black;
    letter-spacing: 0;
    padding: 1px;">[[临东地铁机场线|✈]]</div>