@import url('https://fonts.googleapis.com/css2?family=Jockey+One&display=swap');

html, body { 
  background: url(./main-bg.gif) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;


  animation: gradientAnimation 10s ease infinite;
}
@keyframes gradientAnimation {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

img {
  opacity: 0.9;
  display: block;
  margin: 0 auto;
  border-radius: 6px;

}

.btn {
  font-family: 'Jockey One', sans-serif;
  width: 70px;
  font-weight: bold;
  font-size: 15px;
  background-color: pink;
  color: black;
  padding: 10px;
  cursor: default;
  position: absolute;
  left: 40%;
  top: 80%;
  border-radius: 3px;
  cursor: pointer;
  
}

  
#btn {
    font-family: 'Jockey One', sans-serif;
    font-weight: bold;
    width: 50px;
    font-size: 15px;
    background-color: #000;
    color: #fff;
    padding: 10px;
    cursor: default;
    position: absolute;
    left: 55%;
    top: 80%;
    border-radius: 3px;
}
  
#btn:hover {
    transform: rotate(20deg); 
}
  
@media only screen and (max-width: 720px) {
  img {
    width: 70%;
  }
  .btn {
    left: 30%;
    top: 80%;
  }
  #btn {
    left: 60%;
    top: 80%;
  }
  #btn:hover {
    transform: none; 
}
}