body {
  margin: 0;
}
.main {
  background-image: url("/images/bg.png");
  background-size: cover;
  background-position: top;
  min-height: 100vh;
  width: 100%;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.main::before {
  content: "";
  position: absolute;
  inset: 0;
  backdrop-filter: blur(7px);
}
.link {
  background-color: red;
  width: 280px;
  text-decoration: none;
  text-transform: uppercase;
  padding: 20px;
  text-align: center;
  vertical-align: middle;
  font-size: 20px;
  border-radius: 10px;
  color: white;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.3s ease, background-color 0.3s ease,
    box-shadow 0.3s ease;
  animation: pulse 2s infinite;
}
@media only screen and (min-width: 1440px) {
  .link {
    font-size: 32px;
    width: 500px;
  }
}
@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 0 15px 10px rgba(76, 175, 80, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(76, 175, 80, 0);
  }
}