@charset "utf-8";#presentation{position:fixed;top:0;left:0;z-index:999;width:100vw;height:100vh;background-color:white;opacity:1;visibility:visible;}#presentation #big_logo{width:40%;max-width:500px;position:absolute;top:50%;left:50%;transform:translate(-50%, -50%);transition:4s ease-in-out;}#presentation #big_logo.enter_effect{width:70%;max-width:700px;}