style.css

@import url('https://fonts.googleapis.com/css2?family=Great+Vibes&family=Roboto+Mono&display=swap');

* {
  box-sizing: border-box;
  font-family: 'Roboto Mono', sans-serif;
  margin: 0;
  padding: 0;
}

nav {
  background-color: #f0a73a;
  color: white;
}

.nav-list {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 30px;
  margin-bottom: 5px;
  list-style: none;
}
.main-image {
  display: none;
}

.loading-cat {
  font-size: 50px;
  text-align: center;
  animation: 2s spin linear infinite;
  display: none;
}

.container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80vh;
    overflow: hidden;
  }
  
  .main-image {
    max-width: 100%;
    max-height: 80vh;
  }

@keyframes spin {
  to {
    transform: rotateZ(360deg);
  }
}

.show {
  display: block;
}

footer {
  text-align: center;
  font-size: 0.8rem;
  padding-top: 20px;
}