.back-to-top--gray{bottom:40px;cursor:pointer;opacity:0;pointer-events:none;position:fixed;right:40px;transition:opacity .3s ease;z-index:1000}.back-to-top--gray.visible{opacity:1;pointer-events:auto}.circle-icon-only--gray{align-items:center;background-color:#fff;border:2px solid #888;border-radius:50%;color:#888;display:flex;height:60px;justify-content:center;transition:background-color .3s ease,border-color .3s ease,color .3s ease;width:60px}.circle-icon-only--gray:hover{background-color:#f2f2f2;border-color:#666;color:#666}.circle-icon-only--gray i{font-size:20px;line-height:1}