@use "mixins" as mixins; .center-box { display: flex; flex-direction: column; } .big-logo { font: { size: 5em; weight: bold; }; color: #666; } .slogan { font: { size: 1.3em; style: italic; }; color: #666; } .scroll-to-down { position: absolute; bottom: 20px; animation: 1.5s infinite; @include mixins.unique-keyframes { 0%, 100% { -ms-filter: none; filter: none; opacity: 1; transform: translateY(10px); } 50% { -ms-filter: alpha(opacity=40); filter: alpha(opacity=40); opacity: .4; transform: translateY(-10px); } } }