html+css实现横向时间线

实现效果

布局思路

知识点

中间横线：position垂直居中

圆：定位居中，添加背景色，boder

上下错位文字：奇偶选择器控制定位位置

左右另外添加一个盒子

箭头：css绘制三角形然后居中

width: 0; height:0; border:10px solid transparent; border-left-color: #10FF; position: absolute; right: -10px; top: 50%; transform: translateY(-50%);

实现代码

html

<div style="width:100%;">
        <div class="timeaxis">
            <div class="box1 li">
                <div class="line"></div>
            </div>
            <div class="boxs li" v-for="item in list" :key="item.index">
                <div class="line"></div>
                <div class="circular">{{ item.year }}</div>
                <div class="desc">{{ item.condation }}</div>
            </div>
            <div class="box1 li">
                <div class="line"></div>
                <div
                    style="width: 0;height:0;border:10px solid transparent;
                    border-left-color: #10FF;
                    position: absolute;right: -10px;top: 50%;
                    transform: translateY(-50%);">
                </div>
            </div>
        </div>
    </div>

css

.timeaxis {
    overflow: hidden;
    width: max-content;
    position: relative;
    height: 150px;
    left: 50%;
    transform: translateX(-50%);
}

.box1 {
    width: 60px;
    float: left;
    height: 150px;
    position: relative;
}

.boxs {
    overflow: hidden;
    float: left;
    position: relative;
    width: 180px;
    height: 150px;
}

.line {
    border-bottom: 1px solid #409eff;
    position: absolute;
    width: 100%;
    top: 50%;
    transform: translateY(-50%);
    left: 0;
}

.circular {
    font-size: 14px;
    line-height: 50px;
    text-align: center;
    z-index: 10;
    border: 2px solid #10FF;
    width: 50px;
    height: 50px;
    border-radius: 50px;
    background: white;
    margin: auto;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    left: 50%;
}

.boxs:nth-child(odd) .desc {
    text-align: center;
    position: absolute;
    top: 0;
    width: 100%;
}

.boxs:nth-child(even) .desc {
    text-align: center;
    position: absolute;
    bottom: 0;
    width: 100%;
}