.bottom { height: 40px; width: auto; border-top: 1px solid #82c2fe; background-color: #6db8fe; color: #939393; font-size: 15px; .beian { display: flex; justify-content: space-around; li { padding-right: 10px; line-height: 40px; &:last-child { a { &::before { content: ""; display: inline-block; width: 15px; height: 15px; vertical-align: middle; background: url(../img/beian.png) no-repeat center center; background-size: contain; } } } } } a { color: #939393; } }