用伪类的方式给div加分割线，确保每个div宽度相同

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div1:not(:last-child) ::after {            content: '';            display: block;            width: 1px;            height: 24px;            background-color: rgb(224, 224, 224);            position: absolute;            right: -12px;        }

　　

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&::before {     content: '';     display: block;     width: 1px;     height: 24px;     background-color: rgb(224, 224, 224);     position: absolute;     left: -12px; } &:first-child {     &::before {         display: none;     } }