html {
  font-size: 1rem;
  font-family: 'Amatic SC', cursive;
  height: 100%;
  background-color: #0d011a;
}

body {
  height: 100%;
  display: flex;
  flex-direction: column;
  color: white;
  opacity: 0;
}

.main-container {
  height: 100%;
}

.btn-rays {
  margin: 1em;
  padding: 0.3em;
  position: absolute;
  display: flex;
  align-items: center;
  border-radius: 0.1em;
}

.btn-rays:hover {
  cursor: pointer;
  color: #0d011a;
  background-color: white;
}

footer {
  margin: auto auto 0 auto;
}

.setOpasity {
  -webkit-transition: opacity 3s ease-in-out;
       -moz-transition: opacity 3s ease-in-out;
        -ms-transition: opacity 3s ease-in-out;
         -o-transition: opacity 3s ease-in-out;
            transition: opacity 3s ease-in-out;
}