#calculator{border:1px solid #ccc;border-radius:5px;width:400px;margin:200px auto auto}#display{width:100%;height:80px;border:none;background-color:#252525;color:#fff;text-align:right;padding-right:20px;padding-left:10px;font-size:4rem}#numpad{padding:0;margin:0;width:100%;height:500px;background-color:azure;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;align-content:space-around;border-top:1px solid black}button{height:60px;font-size:2rem!important}#equals{height:98%;grid-area:2 / 4 / 6 / 5}#numpad{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:20px;padding:20px}