*{
    padding: 0;
    margin:0;
}
.body{
    background: url();
    min-height: 100vh;
    background-size: 100vw 100vh;
    background-repeat: no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
}

#board{
    background: linear-gradient(rgb(78, 18, 18),rgb(191, 191, 14));
    width: 90vmin;
    height: 92vmin;
    border: 2px solid black;
    display: grid;
    grid-template-rows: repeat(18,1fr);
    grid-template-columns: repeat(18,1fr);
}

.head{
    background-color: red;
}
.snake{
    background-color: blue;
}

.food{
    background-color: blueviolet;
}