.mod_pagetop{display:flex;justify-content:center;height:70px;background:#5299b0;color:#fff;font-size:14px}.mod_pagetop a{position:relative;top:-24px;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;background:#5299b0;width:72px;height:72px;border-top-left-radius:36px;border-top-right-radius:36px}.mod_pagetop a i{position:relative;display:block;width:2px;height:30px;margin-bottom:4px;background:currentColor}.mod_pagetop a i:before{content:'';display:block;position:absolute;top:0;left:0;width:12px;height:12px;border-top:2px solid currentColor;border-left:2px solid currentColor;transform:translate(1px,-2px) rotate(45deg);transform-origin:0 0}