:root {
  position: relative;
}

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

*, *:before, *:after {
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
  background-color: black;
  width: 100%;
}

h1, h2 {
  text-align: center;
  color: hsl(34, 44%, 68%);
  font-weight: normal;
}

h1 {
  margin: 1rem 0rem 1rem 0rem;
}

h2 {
  font-family: sans-serif;
  margin: 2.2rem 0rem 1rem 0rem;
}

.gallery {
  width: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  gap: 0px;
  margin: 0rem 0rem 0rem 0rem;
}

img {
  width: 50%;
  border-radius: 7px;
  opacity: 0;
  border: 2px solid black;
}

@-webkit-keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
img.vis {
  -webkit-animation: fadeIn 1s;
          animation: fadeIn 1s;
  opacity: 1;
}

img.land {
  width: 100%;
  -webkit-animation: fadeIn 2s;
          animation: fadeIn 2s;
  opacity: 1;
}

a.bti {
  text-decoration: none;
  color: hsl(0, 66%, 68%);
  position: absolute;
  padding: 4px 12px;
  display: block;
  background-color: hsl(261, 36%, 14%);
}

a.top {
  top: 0px;
  border-bottom-right-radius: 5px;
}

a.bot {
  bottom: 0;
  border-top-right-radius: 5px;
}