body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: "Happy Monkey", system-ui;
    height: 100vh;
    width:100%;
    margin: 0;
    padding:3em 0;
    background-color: #f0f0fe;
    background-image: url("christmas1.jpg");
    background-size: cover;
    background-blend-mode:darken;
}

h1 {
    color: darkred;
    font-size: 3rem;
    width:80%;
    text-align: center;

}

.game-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.card {
    width: 6rem;
    height: 6rem;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: darkgreen;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    border-radius: 8px;
}

.card.revealed {
    background-color: #fff;
    color: black;
    cursor: default;
}

#restart-btn{
    margin:20px auto;
    background-color: darkred;
    color:white;
    padding:0.6em 2em;
    border: 1px solid yellow;
    font-size: 1.5rem;
    border-radius: 10px;
    display:none;
    box-shadow: 5px 2px 10px darkred;  
}

@media (min-width:768px){
    body{
        padding:0;
    }
    .game-container {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1em;
        
    }
}