.sa_after{padding: 100px 0;}
.sa_after>h1{border-bottom: 1px solid #ddd;line-height: 3;}
.sa_after_c{display: flex;justify-content: space-between;}
.sa_after_l{width: 22%;line-height: 72px;padding-top: 100px;}
.sa_after_li{padding-left: 34px;cursor: pointer;}
.sa_after_li>h1{font-size: 18px;white-space: nowrap;text-overflow: ellipsis;overflow: hidden;}
.sa_after_la{background-color: #F8F8F8;border-left: 2px solid var(--base);}
.sa_after_la>h1{color: var(--base);}
.sa_after_r{width: 78%;border-left: 1px solid #ddd;padding: 100px;}
.sa_after_ri{display: none;}

@media screen and (max-width: 1200px) {
    .sa_after{padding: 8rem 0;}
    .sa_after_l{width: 30%;line-height: 5rem;padding: 2rem 0 0;}
    .sa_after_li{padding-left: 2rem;}
    .sa_after_li>h1{font-size: 1.4rem;}
    .sa_after_r{width: 70%;padding: 2rem;}
}<!--0.00025510787963867-->