front-end/admin-code/src/assets/css/reset.scss

// reset style
.liu-crud-wrap {
    & .el-row:first-child {
        position: relative;
        top: -10px;
        left: -10px;
        width: calc(100% + 20px);
    }
    .liu-tabs {
        width: 100%;
        height: 40px;
        
        box-shadow: none !important;
        border-left: none !important;
        border-bottom: none !important;
        .el-tabs__content {
            padding: 0 !important;
        }
        & > .el-tabs__header .el-tabs__item {
            border-top: 4px solid#F5F7FA;
            line-height: 34px;
            &.is-active {
                border-top: 4px solid #3385FF;
            }
        }
    }
}