main {
  align-items: center;
  justify-content: center;
  font-family: "Pacifico", cursive;
  height: 100vh;
  padding: 20px;
  text-align: center;
}
h1 {
  color: rgb(18, 99, 136);
}

@keyframes fall {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    top: 100vh;
    opacity: 1;
  }
}
@keyframes sway {
  0% {
    margin-left: 0;
  }
  25% {
    margin-left: 30px;
  }
  50% {
    margin-left: -20px;
  }
  75% {
    margin-left: 70px;
  }
  100% {
    margin-left: 0;
  }
}

#snow-container {  
  height: 300vh;
  overflow: hidden;
  position: absolute;
  top: 0;
  transition: opacity 500ms;
  width: 500%;
}
.snow {
  animation: fall ease-in infinite;
  color: green; 
  position: absolute;
}
#snows-container {  
  height: 300vh;
  overflow: hidden;
  position: absolute;
  top: 0;
  transition: opacity 500ms;
  width: 500%;
}
.snows {
  animation: fall ease-in infinite;
  color: red; 
  position: absolute;
}
#myVideo {
  position: fixed;
  right: 0;
  bottom: 0;
  min-width: 100%;
  min-height: 100%;
}

.content {
  position: fixed;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  color: #f1f1f1;
  width: 100%;
  padding: 20px;
}

#myBtn {
  width: 200px;
  font-size: 18px;
  padding: 10px;
  border: none;
  background: #000;
  color: #fff;
  cursor: pointer;
}

#myBtn:hover {
  background: #ddd;
  color: black;
}