@property --1vw{syntax:"<length>";inherits:true;initial-value:0}:root{--1vw:1vw;--vw-to-px:tan(atan2(var(--1vw),1px))}.lower #contents .l-fv.u-fvimg:before{background:var(--color-key_bg)}.back-btn{margin-top:1.875rem}.back-btn .c-btn_basic01{margin-inline:auto}