SOURCE

var app = new Vue({
  el: '#app',
  data() {
    return {
      
    }
  }, 
  methods: {

  }
});

<div id="app">
    <el-tabs type="border-card">
  <el-tab-pane label="用户管理">用户管理</el-tab-pane>
  <el-tab-pane label="配置管理">配置管理</el-tab-pane>
  <el-tab-pane label="角色管理">角色管理</el-tab-pane>
  <el-tab-pane label="定时任务补偿">定时任务补偿</el-tab-pane>
</el-tabs>
</div>

:root {
    --border-color: #d9d9d9;
    --primary-gradient: linear-gradient(180deg, #a1fcf0, #11aa95);
    --active-primary-gradient: linear-gradient(180deg, #c6ffdd, #69d192);
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item:not(.is-disabled):hover {
    color: #FFFFFF;
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item.is-active {
    color: #FFFFFF;
    background: var(--active-primary-gradient);
    z-index: 999;
}

.el-tabs--border-card>.el-tabs__header {
    position: relative;
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item {
    color: #FFFFFF;
    margin: 0 30px;
    background: var(--primary-gradient);
    border: none;
    height: 28px;
    line-height: 28px;
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item:first-child {
    margin-left: 22px;
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item::before,
.el-tabs--border-card>.el-tabs__header .el-tabs__item::after {
    content: "";
    height: 100%;
    position: absolute;
    background: var(--primary-gradient);
    border-radius: 8px 8px 0 0;
    width: 30px;
    top: 0;
    transition: all .3s cubic-bezier(.645, .045, .355, 1);
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item::before {
    right: -16px;
    transform: skew(-25deg);
    border-radius: 0 0 8px 0;
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item::after {
    transform: skew(25deg);
    left: -16px;
    border-radius: 0 0 0 8px;
    border-left: 1px solid var(--border-color);
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item.is-active::before,
.el-tabs--border-card>.el-tabs__header .el-tabs__item.is-active::after {
    background: var(--active-primary-gradient);
    transition: all .3s cubic-bezier(.645, .045, .355, 1);
    z-index: 999;
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item.is-active::before {
    border-right: 1px solid var(--border-color);
}

.el-tabs--border-card>.el-tabs__header .el-tabs__item.is-active::after {
    border-left: 1px solid var(--border-color);
}