* {
  padding: 0;
  margin: 0;
}

#spider {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
  background-image: url(https://static3.cbrimages.com/wordpress/wp-content/uploads/2019/05/Spider-Man-meme.jpeg?q=50&fit=crop&w=960&h=500&dpr=1.5); 
  background-position: center;
  background-size: cover;
  margin-bottom: 0;
}
 
h1 {
  color: white;
  font-weight 100;
  font-size: 42px;
  font-family: arial;
  animation-delay: 3s;
}

button {
  padding: 10px 50px;
  border: 2px solid white;
  background-color: Transparent;
  color: white;
  border-radius: 10px;
  animation-delay: 1s;
  font-size: 30px;
  animation-name: colorShift-2;
  animation-duration: 2s;
  animation-fill-mode: forwards;
}

.ex-l {
  background-size: contain;
  background-repeat: no-repeat;
}
 
.ex-2 {
  background-size: 50%;
  background-repeat: no-repeat;
}


@keyframes colorShift {
  from {
    background-color: Transparent;
    color: white;
    padding: 10px 50px;
    border-radius: 10px;
  }
  
  to {
    background-color: white;
    color: black;
    padding: 10px 100px;
    border-radius: 50px;
  }
}

@keyframes colorShift-2 {
  0% {
    background-color: Transparent;
    color: white;
    padding: 10px 50px;
    border-radius: 10px;
  }
  
  12% {
    background-color: blue;
    color: red;
    padding: 10px 80px;
    border-radius: 20%;
  }
  
  50% {
    background-color: red ;
    color: blue;
    padding: 10px 20px;
    border-radius: 50%;
  }
  
  100% {
    background-color: white;
    color: black;
    padding: 10px 100px;
    border-radius: 50px;
  }   
}