ul ul{max-height:50vh;overflow-y:scroll;overflow-x:hidden}.sub-menu::-webkit-scrollbar-track{-webkit-box-shadow:inset 0 0 6px rgba(0,0,0,0.3);background-color:#F5F5F5}.sub-menu::-webkit-scrollbar{width:10px;background-color:#00455b}.sub-menu::-webkit-scrollbar-thumb{background-color:#00455b}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::selection{background:#00455b;color:#fff}::-moz-selection{background:#00455b}