:root{--bg-button:#f0f0f0;--border-button:solid 1px #888}.button{font-size:1.4em;background-color:var(--bg-button);border:none;border-right:var(--border-button);border-bottom:var(--border-button);outline:none}.button:active{background-color:#ccc}.button.double{grid-column:span 2}.button.triple{grid-column:span 3}.button.operation{background-color:#fa8231;color:#fff}.button.operation:active{background-color:rgba(250,130,49,.8)}.display{grid-column:span 4;background-color:rgba(0,0,0,.26666666666666666);display:flex;justify-content:flex-end;align-items:center;padding:20px;font-size:2.1em;overflow:hidden}.calculator{height:320px;width:235px;border-radius:5px;overflow:hidden;display:grid;grid-template-columns:repeat(4,25%);grid-template-rows:1fr 48px 48px 48px 48px 48px}@font-face{font-family:RobotoMono;src:url(../fonts/RobotoMono-Thin.7cb58857.ttf)}*{font-family:RobotoMono,monospace}body{margin:0}#app{display:flex;flex-direction:column;height:100vh;justify-content:center;align-items:center;text-align:center;color:#fff;background:linear-gradient(90deg,#536976,#292e49)}