:root{--secondary-color: #E7ECEF;--primary-color: #274C77;--tertiary-color: #6096BA}:root,body,#root,.app{display:flex;flex-direction:column;height:100%;padding:0;margin:0;background-color:var(--primary-color)}header{display:flex;justify-content:space-between;padding:0 10vw;background-color:var(--tertiary-color);border-bottom:2px solid var(--secondary-color)}button{padding:50px 100px;background-color:var(--tertiary-color);border-color:var(--secondary-color)}button:hover{background-color:var(--primary-color)}.game{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:10px}.card{border:1px solid #000000;height:100px}.card:hover{opacity:70%}.card:active{opacity:30%}footer{display:flex;justify-content:center;background-color:var(--tertiary-color);border-top:2px solid var(--secondary-color)}a{text-decoration:none;color:var(--primary-color)}main{display:flex;flex-direction:column;flex:1;align-items:center;justify-content:center}