:root {
    --bg: #011f4b;
    --hl: #6497b1;
    --board: #b3cde0;}
body {
    width: 32em;
    margin: auto;
    background-color: var(--bg);
    display: flex;
    flex-direction: column;}

h1 {color: #D1EBEB;
    font-size: 36px;
    font-family: Helvetica;}

.board {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    margin-left: -10px;
    padding-bottom: 10px;}

.cell {
    background-color: var(--board);
    border: 0.1px solid var(--board);}

.controls {
    display: flex;
    align-items: left;}


button {
  background-color: var(--hl);
  border: 0;
  border-radius: .5rem;
  box-sizing: border-box;
  color: #111827;
  font-family: "Inter var",ui-sans-serif,system-ui,-apple-system,system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
  font-size: .775rem;
  font-weight: 600;
  line-height: 0.8rem;
  padding: .45rem 0.6rem;
  margin-right: 3px;
  text-align: center;
  text-decoration: none #D1D5DB solid;
  text-decoration-thickness: auto;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

button:hover {
  background-color: rgb(249,250,251);
}

button:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
}