* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

@font-face {
  font-family: 'Road Rage';
  src:
       url('fonts/Road_Rage.otf') format('woff'),
  font-display: swap;
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all .5s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

body {
    background: url(img/bg2.jpg);
    background-size: cover;
    display: flex;
    justify-content: center;
    padding-top: 40px;
}

.main-div {
    width: 100%;
    max-width: 350px;
    text-align: center;
}

.main-div img {
    width: 100%;
    max-width: 600px;
    display: block;
    margin: 40px auto 20px;
}

.button {
    width: 100%;
    max-width: 260px;
    height: 60px;
    margin: 10px auto;
    border: 5px solid white;
    border-radius: 30px;
    font-size: 28px;
    background-color: #4F1615;
    color: white;
    cursor: pointer;
    font-family: 'Road Rage';

    background: linear-gradient(120deg, red, pink, black);
    background-size: 300% 300%;
    animation: moveGradient 4s ease infinite;
    box-shadow: 0 0 30px white, 0 0 60px grey;
    transition: 0.1s
}

.button:hover {
    transform: scale(1.04);
    box-shadow: 0 0 30px white, 0 0 60px white;
}

@keyframes moveGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@media (max-width: 600px) {
    .main-div img {
        width: 350px;
        height: 350px;
    }

    .button {
        max-width: 230px;
        font-size: 24px;
        height: 45px;
    }
}