.sidebar-box{position:relative;overflow:hidden;transition:height .35s ease} .sidebar-content{position:relative} .sidebar-box.is-collapsed .sidebar-content::after{ content:""; position:absolute; left:0; right:0; bottom:0; height:60px; pointer-events:none; background:linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,1)) } .sidebar-box .read-more{margin:30px 0 0 0;text-align:center} .sidebar-box .button{display:inline-block;text-decoration:none}