index.css

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap');

* {
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background-image: url('fart-counter.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    margin: 0;
    padding: 0;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    gap: 1rem;
    padding: 1rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
}

.counter {
    font-size: 3rem;
    font-weight: 300;
    margin: 0;
}

.button {
    font-size: 1.2rem;
    font-weight: 400;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    outline: none;
    position: relative;
    overflow: hidden;
}

.button:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent, #734106, #91530b, transparent);
    transform: translateY(-100%);
    transition: 0.5s;
}

.button:hover:before {
    transform: translateY(0);
}

@keyframes borderAnimation {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.button:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid #734106;
    box-sizing: border-box;
    transform: translateX(-100%);
    animation: borderAnimation 1s infinite linear;
}

p {
    font-size: 1.2rem;
    font-weight: 400;
}

@media screen and (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    .counter {
        font-size: 2.5rem;
    }

    .button {
        font-size: 1rem;
        padding: 8px 16px;
    }
}