.landing_pagev3 .back_top_main{background:#d1d3e2;position:relative}.landing_pagev3 .back_btn a:before{background:#fff}.back_btn a>svg{display:block;height:auto;margin:0 auto .3em;width:1.2em}.back_btn{text-align:right;position:relative}.back_btn a{text-decoration:none;color:#06215a;display:inline-block;font-size:1.2rem;padding:2em 1em 1em;position:relative;text-align:center;z-index:2;cursor:pointer}.back_btn a:before{background:#d1d6e3;border-radius:50%;content:"";display:block;height:10em;left:50%;position:absolute;top:0;transform:translateX(-50%);z-index:-1;width:10em}@media only screen and (max-width:990px){.back_btn a{font-size:1.5rem}.back_btn a:before{height:8em;top:14px;width:8em}}