* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
body {
	background: #121212;
	color: #fff;
}
.instagram {
	font-size: 2rem;
	font-weight: 400;
	background: #fff;
	color: #000;
}
#conteudo {
	text-align: center;
}
.cabecalho {
	font-family: monospace;
	font-size: 1.3rem;
	border: 1px solid #444;
	background: #222;
	color: #fff;
	padding: 5px;
	border-radius: 0 0 15px 15px;
}

#instrucoes {
	display: none;
}

#contadorDeTempo {
	font-size: 1.7rem;
	background: #222;
	width: max-content;
	margin: 10px auto;
	padding: 5px;
	border-radius: 7px;
}

#tabuleiro {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12.5%, 1fr));
  grid-template-rows: repeat(8, 1fr);
  background-color: #ddd;
  max-width: 500px;
  margin: 20px auto;
  border: 2px solid #222;
}

#tabuleiro .campo {
  border: 1px solid #999;
  text-align: center;
  height: 5vh;
  cursor: pointer;
}
#tabuleiro .campo.branco {
  background-color: #fff;
}

#tabuleiro .campo.preto {
  background-color: #000;
}

#tabuleiro .campo:hover {
  opacity: 0.5;
}

#tabuleiro .campo.ocupado {
  background-color: rgb(70, 199, 53);
  font-size: 40px;
  color: #002d7a;
}
.btn_iniciar {
	font-size: 1.3rem;
	padding: 10px 40px;
	text-transform: uppercase;
	color: #fff;
	background: transparent;
	border: 2px solid #999;
	cursor: pointer;
	border-radius: 10px;
	transition: all .5s ease-in-out;
}
.btn_iniciar:hover {
	background: #999;
}