body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
}

h1 {
    margin: 10px;
}
header img{
	position: absolute;
	left: 30px;
}
header {
	width: 100%;
	background-color: white;
	text-align: center;
	padding: 30px 0px 30px;
}
.game-board {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    gap: 10px;
}

.card {
    width: 100px;
    height: 152px;
    background-image: url('img/card.png');
    background-size: cover;
    cursor: pointer;
    position: relative;
}

.card img {
    width: 100%;
    height: 100%;
    display: none;
}

.card.flipped {
    background-image: none;
}

.card.flipped img {
    display: block;
}