@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@900&display=swap');

body {
    padding: 0;
    margin: 0;
    height: 100vh;
    background: #2a2734;
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
}

ul {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
}

li {
    list-style: none;
}

div {
    height: 60px;
    width: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 36px;
    cursor: pointer;
    margin: 4px;
    border-radius: 10px;
    color: blue;
    text-shadow: 0 0 10px blue, 0 0 15px blue;
    animation: animate 1.5s linear infinite;
}

@keyframes animate {
    0% {
        filter: hue-rotate(0deg);
    }
    100% {
        filter: hue-rotate(360deg);
    }
}

@media (min-width: 600px) {
    div {
        height: 80px;
        width: 80px;
        font-size: 46px;
        border-radius: 20px;
        text-shadow: 0 0 15px blue, 0 0 25px blue;
    }
}