@keyframes pulse { 0% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.08); opacity: 0.4; } 100% { transform: scale(1.15); opacity: 0; } } .header .nav-item-toggle-root{ overflow: visible; } #nav-wrapper > ul > li:nth-of-type(3) > a { position: relative; } #nav-wrapper > ul > li:nth-of-type(3) > a::before { content: ''; position: absolute; top: 10px; left: 2px; right: 2px; bottom: 10px; border: 3px solid rgb(2, 101, 220); border-radius: 6px; pointer-events: none; z-index: 1; animation: pulse 1.4s linear infinite; }