html,body{overflow-x:hidden}body{background-color:#212121;width:100%;height:100%;margin:0;padding:0}.calculator{color:#fff;background-color:#2e2e2e;border-radius:7px;max-width:800px;height:420px;margin-top:50vh;margin-left:50%;padding:10px 20px;font-family:Hack,serif,Consolas,monospace;transform:translate(-50%,-50%);box-shadow:inset 1px 1px 2px #0006}.hint{color:#c3c3c3}@media screen and (width<=850px){.calculator{border-radius:0;width:100vw;height:100vh;margin:0;padding:0;transform:none}}