style.css

:root {
    --color2: #eabfcb;
    --color1: #fd6b9c;
    --color3: #a4508b;
    --color4: #2f004f;
}

html {
    font-family: 'Roboto', sans-serif;
}


.main {
	display: grid;
	grid-template-columns: 50% 50%;
    height: 100%;
    text-align: center;
}

@media only screen and (max-width: 1000px) {
	.main {
	  display: grid;
	  grid-template-columns: 100%;
	}
}

.btn {
    color: #ffffff;
    font-size: 25px;
    background-color: var(--color4);
    padding: 10px;
    border: 2px solid var(--color1);
    border-radius: 5px;
    font-family: 'Roboto', sans-serif;
}


/* Background */

@keyframes move {
    100% {
        transform: translate3d(0, 0, 1px) rotate(360deg);
    }
}

.background {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: #5f0a87;
    overflow: hidden;
    z-index: -1;
}

.background span {
    width: 20vmin;
    height: 20vmin;
    border-radius: 20vmin;
    backface-visibility: hidden;
    position: absolute;
    animation: move;
    animation-duration: 45;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}


.background span:nth-child(0) {
    color: var(--color1);
    top: 20%;
    left: 90%;
    animation-duration: 24s;
    animation-delay: -14s;
    transform-origin: 21vw 6vh;
    box-shadow: 40vmin 0 5.9392336039133475vmin currentColor;
}
.background span:nth-child(1) {
    color: var(--color1);
    top: 15%;
    left: 92%;
    animation-duration: 9s;
    animation-delay: -11s;
    transform-origin: 13vw 2vh;
    box-shadow: -40vmin 0 5.179507303248286vmin currentColor;
}
.background span:nth-child(2) {
    color: var(--color1);
    top: 58%;
    left: 79%;
    animation-duration: 17s;
    animation-delay: -45s;
    transform-origin: -23vw -7vh;
    box-shadow: -40vmin 0 5.4914550965315225vmin currentColor;
}
.background span:nth-child(3) {
    color: var(--color2);
    top: 26%;
    left: 11%;
    animation-duration: 8s;
    animation-delay: -11s;
    transform-origin: 5vw 9vh;
    box-shadow: 40vmin 0 5.583894569486294vmin currentColor;
}
.background span:nth-child(4) {
    color: var(--color2);
    top: 77%;
    left: 15%;
    animation-duration: 32s;
    animation-delay: -17s;
    transform-origin: -20vw -5vh;
    box-shadow: 40vmin 0 5.640635291320467vmin currentColor;
}
.background span:nth-child(5) {
    color: var(--color2);
    top: 100%;
    left: 55%;
    animation-duration: 43s;
    animation-delay: -42s;
    transform-origin: -3vw -21vh;
    box-shadow: -40vmin 0 5.9558091803644855vmin currentColor;
}
.background span:nth-child(6) {
    color: var(--color3);
    top: 67%;
    left: 63%;
    animation-duration: 13s;
    animation-delay: -5s;
    transform-origin: 6vw 9vh;
    box-shadow: -40vmin 0 5.152800213352103vmin currentColor;
}
.background span:nth-child(7) {
    color: var(--color2);
    top: 68%;
    left: 61%;
    animation-duration: 12s;
    animation-delay: -14s;
    transform-origin: 5vw -7vh;
    box-shadow: -40vmin 0 5.015529966338495vmin currentColor;
}
.background span:nth-child(8) {
    color: var(--color1);
    top: 24%;
    left: 81%;
    animation-duration: 45s;
    animation-delay: -26s;
    transform-origin: -21vw 20vh;
    box-shadow: 40vmin 0 5.122361411158385vmin currentColor;
}
.background span:nth-child(9) {
    color: var(--color2);
    top: 57%;
    left: 39%;
    animation-duration: 51s;
    animation-delay: -34s;
    transform-origin: -14vw -3vh;
    box-shadow: -40vmin 0 5.205352596815745vmin currentColor;
}
.background span:nth-child(10) {
    color: var(--color3);
    top: 37%;
    left: 72%;
    animation-duration: 14s;
    animation-delay: -15s;
    transform-origin: -15vw 4vh;
    box-shadow: 40vmin 0 5.994042798631209vmin currentColor;
}
.background span:nth-child(11) {
    color: var(--color3);
    top: 67%;
    left: 50%;
    animation-duration: 17s;
    animation-delay: -26s;
    transform-origin: -13vw 6vh;
    box-shadow: 40vmin 0 5.077366315353853vmin currentColor;
}
.background span:nth-child(12) {
    color: var(--color3);
    top: 34%;
    left: 33%;
    animation-duration: 20s;
    animation-delay: -40s;
    transform-origin: 11vw -12vh;
    box-shadow: 40vmin 0 5.1152464044303905vmin currentColor;
}
.background span:nth-child(13) {
    color: var(--color2);
    top: 6%;
    left: 11%;
    animation-duration: 10s;
    animation-delay: -33s;
    transform-origin: -23vw -12vh;
    box-shadow: -40vmin 0 5.166214717654308vmin currentColor;
}
.background span:nth-child(14) {
    color: var(--color1);
    top: 61%;
    left: 95%;
    animation-duration: 50s;
    animation-delay: -49s;
    transform-origin: -14vw 17vh;
    box-shadow: -40vmin 0 5.4091809431550715vmin currentColor;
}
.background span:nth-child(15) {
    color: var(--color3);
    top: 39%;
    left: 11%;
    animation-duration: 17s;
    animation-delay: -31s;
    transform-origin: -7vw 14vh;
    box-shadow: 40vmin 0 5.822595274677672vmin currentColor;
}
.background span:nth-child(16) {
    color: var(--color2);
    top: 18%;
    left: 56%;
    animation-duration: 10s;
    animation-delay: -4s;
    transform-origin: -4vw -6vh;
    box-shadow: -40vmin 0 5.453207768017715vmin currentColor;
}
.background span:nth-child(17) {
    color: var(--color2);
    top: 40%;
    left: 53%;
    animation-duration: 22s;
    animation-delay: -43s;
    transform-origin: 9vw -19vh;
    box-shadow: 40vmin 0 5.430088144372339vmin currentColor;
}
.background span:nth-child(18) {
    color: var(--color2);
    top: 98%;
    left: 12%;
    animation-duration: 11s;
    animation-delay: -9s;
    transform-origin: 16vw -8vh;
    box-shadow: 40vmin 0 5.340590690371227vmin currentColor;
}
.background span:nth-child(19) {
    color: var(--color1);
    top: 54%;
    left: 95%;
    animation-duration: 43s;
    animation-delay: -35s;
    transform-origin: 9vw 23vh;
    box-shadow: -40vmin 0 5.462361592901823vmin currentColor;
}

/* Game */

.grid {
	width: 400px;
	height: 400px;
	display: flex;
	flex-wrap: wrap;
	border: 10px solid var(--color4);
	background-color: var(--color2);
	border-radius: 7px;
}

.grid div {
	width: 40px;
	height: 40px;
}

.snake {
	background-color: var(--color3);
}

.apple {
    background-color: var(--color1);
    border-radius: 50%;
}


.hide {
    display: none;
}

.footer{
    /* grid-column: auto/span 1; */
    font-size: 20px;
    width: 100%;
	text-align: center;
	align-items: center;
    margin: auto;
    color: #ffffff;
}