style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.main-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background:linear-gradient(rgb(115, 185, 217),rgb(233, 158, 171));
}


.snake-board {
    
    
    display: grid;
    width: 95vmin;
    height: 92vmin;
    border: 3px solid #e51f7f;
    background:linear-gradient(rgb(244, 220, 115),rgb(166, 247, 167))  ;
    margin: 4px 0 12px 0;
    grid-template-rows: repeat(28, 1fr);
    grid-template-columns: repeat(28, 1fr);
}

.keycontrol {
    width: 95vw;
    height: 30vh;
    position: relative;

}

.btn {
    position: absolute;
    width: 18vw;
    background-color: #0f100f;
    color: #1fb9e5;
    height: 8vh;
    border: 2px solid #1fb9e5;
    border-radius: 12px;
    font-weight: 900;
    font-size: 19px;

}

#UP {
    top: 1vh;
    left: 38vw;
}

#DOWN {
    bottom: 3vh;
    left: 38vw;

}
#RIGHT{
    top: 8vh;
    right: 10vw;
}
 #LEFT {
    top: 8vh;
    left: 8vw;

 }
 .head {
    background-color:#250380;
    border: 2px solid black;
    
 }

 .snake {
    background-color: #ff6700;
    border: 2px solid #b14c08;

 }

 .food {
    background-color: #f10404;
    border: 1px solid #9b3d3d;
 }

 #scoreBox {
    position: absolute;
    top: 9px;
    right: 200px;
    font-size: 39px;
    font-weight: bold;
 }