.head{top:0}.mt1_content{width:7.1rem;margin:0 auto}.mt1_header{width:100%;background-color:#1a1a1a;position:fixed;top:1.1rem;z-index:99}.mt1_header .mt1_content{width:6.8rem;display:flex}.mt1_header .mt1_content .mt1hc_select{width:100%;height:1.08rem;position:relative}.mt1_header .mt1_content .mt1hc_select i{position:absolute;top:.48rem;right:.1rem;width:.24rem;height:.14rem;background-image:url(../images/arrow_down-de642030f7.png);background-size:cover;transition:.2s all ease}.mt1_header .mt1_content .mt1hc_select.show_nav i{transform:rotateZ(180deg)}.mt1_header .mt1_content .mt1hc_select span{display:inline;font-size:.28rem;line-height:1.08rem;color:rgba(255,255,255,.7)}.mt1_header .mt1_content .mt1hc_btn a{display:block;margin-top:.25rem;width:1.4rem;height:.6rem;text-align:center;line-height:.6rem;color:#fff;font-size:.24rem;font-weight:500;border-radius:.3rem;background-color:#0d7fef}.mt1_header .mt1h_selectbox{position:absolute;top:1.08rem;left:0;display:none;background-color:#171717}.mt1_header .mt1h_selectbox ul{width:6.8rem;margin:0 .35rem;padding-bottom:.1rem}.mt1_header .mt1h_selectbox ul li{width:100%;height:1.1rem;line-height:1.1rem;border-bottom:.02rem solid rgba(255,255,255,.08)}.mt1_header .mt1h_selectbox ul li:last-child{border:none}.mt1_header .mt1h_selectbox ul li a{display:block;color:rgba(255,255,255,.7);width:100%;height:1.08rem;font-size:.3rem;font-weight:500;text-align:center}.mt1_header .mt1h_selectbox ul li a:active{color:#fff}.mixpadS2page{padding-top:2.18rem;padding-bottom:.01rem;background-color:#111}.mixpadS2page .sec img{width:100%;height:auto}