html {
  font-family: "Nunito", sans-serif;
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

main {
  display: grid;
  place-items: center;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: 0;
  padding-top: 30px;
  padding-bottom: 100px;
  transition-duration: 0.5s;
  text-align: center;
}

section {
  max-width: 550px;
  text-align: left;
}

ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

footer {
  background-color: #f5f5f5;
  border-radius: 5px;
  color: #333;
  height: 40px;
  line-height: 40px;
  text-align: center;
  white-space: nowrap;
  margin: 15px auto;
  width: 250px;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
}

@media (min-height: 1200px) {
  main {
      padding-bottom: 200px;
  }
}

h1 {
  margin-top: 0;
}

h3 {
  margin: 0;
}

a {
  color: #555;
  text-decoration: none;
  transition-duration: 0.2s;
}

a:hover {
  color: #000;
}

.center {
  text-align: center;
}

img {
  display: block;
  width: 250px;
  height: 250px;
  margin: auto;
}

.animated {
  animation: 0.2s size-bounce cubic-bezier(0.39, 0.575, 0.565, 1) alternate;
  animation-iteration-count: 2;
}

.flip-animated {
  animation: 0.2s flip-size-bounce cubic-bezier(0.39, 0.575, 0.565, 1) alternate;
  animation-iteration-count: 2;
}

#wisdom {
  margin: 0;
  font-size: 2rem;
  font-weight: bold;
  opacity: 0;
  transition-duration: 0.2s;
}

.visible {
  opacity: 1 !important;
}

@keyframes size-bounce {
  0% {
      transform: scale(1);
  }
  100% {
      transform: scale(1.05);
  }
}

@keyframes flip-size-bounce {
  0% {
      transform: scaleX(-1) scale(1);
  }

  100% {
      transform: scaleX(-1) scale(1.05);
  }
}

@media screen and (min-width: 768px) {
  img {
      width: 600px;
      height: 600px;
      max-height: 60vh;
  }
}