road，HTML/Vue代码在线实时编辑、预览

            
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            /* 示例代码 */
body {
    text-align: center;
    background: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}

.road {
    width: 200px;
    height: 400px;
    border: 1px #fff solid;
    transform: rotateX(45deg);
    -webkit-transform: rotateX(45deg);
    /* Safari and Chrome */
    display: flex;
    flex-direction: row;
    position: relative;

    .common {
        border-right-color: transparent;
        flex: 1;
        position: relative;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;

        .mark {
            color: #fff;
            font-size: 30px;
            margin: 30px 0;
            height: 40px;
        }

        &:hover {
            background: green;
        }
    }

    .subtend {
        .mark {
            transform: rotate(180deg);
        }
    }

    .line {
        border-right: 1px dashed #fff;
    }

    .separate {
        flex-basis: 2px;

        border: 1px solid yellow;
        flex-grow: 0;
        border-top: none;
        border-bottom: none;
    }

    &::before {
        content: "";
        position: absolute;
        width: 100%;
        height: 40px;
        top: -40px;
        border: 1px solid #fff;

        background: repeating-linear-gradient(90deg, #fff, transparent 1%, transparent 4%);
    }

}

.traffic-light {
    width: 100px;
    border: 1px solid #fff;
    display: flex;
    justify-content: space-around;
    background: #000;

    #countdown {
        border-radius: 0;
        border-color: transparent;
    }

    div {
        width: 30px;
        height: 30px;
        border: 1px solid #fff;
        border-radius: 50%;
        color: #fff;
        font-size: 28px;

        display: flex;
        justify-content: center;
        align-items: center;
        color: green;

    }

    .green {
        color: green;
    }

    .red {
        color: red;
    }

    .left {
        transform: rotate(180deg);
    }

    .up {
        transform: rotate(-90deg);
    }
}

.red {
    color: red;
}
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