* {
    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/bg1.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 #4491CA;
  border-radius: 30px;
  font-size: 28px;
  color: white;
  font-family: 'Road Rage', sans-serif;
  background-color: black;
  cursor: pointer;
 
  background: linear-gradient(120deg, #5170FF, black, #FF66C4);
  background-size: 300% 300%;
  animation: moveGradient 4s ease infinite;
  box-shadow: 0 0 30px #5170FF, 0 0 60px #FF66C4;
  transition: 0.3s
}

.button:hover {
  transform: scale(1.04);
  box-shadow: 0 0 30px #5170FF, 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;
  }
}