@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,500;1,900&display=swap');

* {
    font-family: 'Poppins',cursive;
}

body {
    color: azure;
    height: 190vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: black;
}

.greetings {
    font-size: 6rem;
    font-weight: 900;
}

    .greetings > span {
        animation: glow 2.5s ease-in-out infinite;
    }

@keyframes glow {
    0%, 100% {
        color: #fff;
        text-shadow: 0 0 12px #39c6d6, 0 0 50px #39c6d6, 0 0 100px #39c6d6;
    }

    10%, 90% {
        color: #111;
        text-shadow: none;
    }
}

.greetings > span:nth-child(2) {
    animation-delay: .2s;
}

.greetings > span:nth-child(3) {
    animation-delay: .4s;
}

.greetings > span:nth-child(4) {
    animation-delay: .6s;
}

.greetings > span:nth-child(5) {
    animation-delay: .8s;
}

.description {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.button a {
    text-decoration: none;
    font-size: 1rem;
    color: #111;
}

@media screen and (max-width:574px) {
    .greetings {
        display: block;
        font-size: 3rem;
        font-weight: 500;
        text-align: center;
    }

    .description {
        font-size: 1rem;
    }

    .button a {
        font-size: .5rem;
    }
}