style.css

@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700&display=swap');

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Open Sans', sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #E3F2FD;
    flex-direction: column;
}

.wrapper {
    width: 65vmin;
    height: 80vmin;
    display: flex;
    overflow: hidden;
    flex-direction: column;
    border-radius: 5px;
    background: #293447;
    text-align: center;
}

span i {
    font-size: 2rem;
    margin: 10px 0;
    color: crimson;
    cursor: pointer;
    text-shadow: 1px 1px 10px black;
    /* transform: rotate(90deg); */
    transition: 1.2s all ease;
}

.game-details {
    color: #B8C6DC;
    font-size: 1.2rem;
    font-weight: 500;
    padding: 20px 27px;
    display: flex;
    justify-content: space-between;
}

.play-board {
    width: 100%;
    height: 100%;
    display: grid;
    grid-template: repeat(30, 1fr) / repeat(30, 1fr);
    background: #212837;
}

.play-board .food {
    background: #FF003D;
    border-radius: 10px;
}

.play-board .head {
    background: #60CBFF;
}

.controls {
    display: none;
    justify-content: space-between;
}

.controls i {
    padding: 25px 0;
    color: #b8b8b8;
    text-align: center;
    cursor: pointer;
    font-size: 1.3rem;
    width: calc(100% / 4);
    border-right: 1px solid #171b26;
}

@media screen and (max-width: 800px) {
    .wrapper {
        width: 90vmin;
        height: 130vmin;
    }

    .game-details {
        font-size: 1rem;
        padding: 15px 27px;
    }

    .controls {
        display: flex;
    }

    .controls i {
        padding: 15px 0;
        font-size: 1rem;
    }
}