.btn {
  background: linear-gradient(270deg, #c49736, #e0ca93, yellow);
  background-size: 1400% 1400%;
  animation: rainbowStripes 5s linear infinite;
}

@keyframes rainbowStripes {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 100% 50%;
  }
}

.btn:hover {
  transform: scale(1.05);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

strong {
  font-weight: bold;
}

* {
  margin: 0;
}

* {
  outline: none;
}

*, *:after, *:before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}