.case{width:100%;margin-top:70px}.case .top{height:5.22rem;text-align:center;color:#fff;width:100%;display:flex;align-items:center;justify-content:center;flex-direction:column}.case .topic{font-size:.71rem;line-height:.56rem;margin-bottom:.5rem}.case .subTopic{font-size:.45rem;line-height:.56rem}.case .con{width:9.5rem;margin:0 auto;margin-bottom:2.5rem}.case .solution{margin-bottom:.15rem}.case .title{font-size:.4rem;line-height:.56rem;color:#464c4e;margin-top:.9rem;margin-bottom:.3rem}.case .content{color:#6d6d6d}.case .item .subtitle{margin-bottom:.37rem;margin-top:.37rem;font-size:.3rem;color:#464c4e}.case .item li{margin-bottom:.2rem;list-style:decimal}.case .item ul{margin-left:.2rem}@media screen and (max-width: 750px){.case .title{font-size:18px;margin-top:1.6rem;margin-bottom:.6rem}.case .solution{margin-bottom:.4rem}.case .con{width:11rem}.case .item .subtitle{font-size:15px}.case .item li{margin-bottom:.4rem}.case .item ul{margin-left:.6rem}.case .subTopic{font-size:16px}.case .topic{margin-bottom:1rem}}