/* App-wide styling */
html, body, #main {
	margin: 0;
	padding: 0;
	height: 100%;
}
body {
    background-color: #efeffc;
    color: #000000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

main {
  margin: auto;
  max-width: 40rem;
  justify-content: space-between;
  display: flex;
  flex-direction: column;
  height: 100%;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
	margin: 3rem 0;
}

tr {
    border: 1px solid gray;
}

td {
    border: 1px solid gray;
    text-align: center;
	padding: 2px;
}

#controls {
	margin: 3rem 0;
	display: flex;
}

#controls > * {
	flex: 1 1 auto;
}

.number {
    width: 1rem;
    animation: 1s ease-in-out 1s backwards number-scale;
}

@keyframes number-scale {
    from { font-size: xx-large; }
    to { font-size: initial; }
}