.back-button{position:fixed;top:70px;left:2px;display:flex;justify-content:center;align-items:center;width:53px;height:53px;border-radius:50%;background-color:#333;box-shadow:0 4px 8px rgba(0,0,0,.3);transition:background-color .3s}.back-button:hover{background-color:#555}.back-button::after,.back-button::before{content:'';width:16px;height:3px;background-color:var(--color-fg-default)}.back-button::before{transform:translate(7px,5px) rotate(45deg)}.back-button::after{transform:translate(-9px,-5px) rotate(-45deg)}