main.css

body {
  width: 1920px;
  height: 1080px;
  padding: 0px;
  margin: 0px;
}

.instructions {
  font-size: 48px;
  font-family: sans-serif;
  text-align: center;
}

@keyframes slidein {
  0% {
    left: -1920px;
  }
  10% {
    left: 0px;
  }
  80% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

#alerts {
  width: 1920px;
  height: 1080px;
}

#alerts-frame {
  position: absolute;
  width: 1920px;
  height: 1080px;
  display: flex;
  flex-direction: column;
  flex-wrap: wrap-reverse;
  align-content: flex-start;
  animation-name: slidein;
  animation-duration: 10s;
  animation-fill-mode: forwards;
}

.alert {
  display: flex;
  flex-direction: row;
  align-items: center;
  background-color: rgb(97, 97, 97);
  width: 627px;
  height: 204;
  margin-top: 10px;
  margin-right: 10px;
  border-radius: 40px;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.profile-picture {
  display: block;
  width: 204;
  height: 204;
  background-color: black;
  border-radius: 40px;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.name-group {
  width: 423;
  display: flex;
  flex-direction: column;
}
.followed-by {
  font-family: sans-serif;
  text-align: center;
  padding: 5px;
  background-color: #6441a5;
  color: white;
  font-size: 30px;
  font-weight: 900;
}
.display-name {
  font-family: sans-serif;
  text-align: center;
  padding: 15px;
  background-color: gray;
  color: white;
  font-size: 35px;
  font-weight: 900;
  text-shadow: -1px 1px 2px #000, 1px 1px 2px #000, 1px -1px 0 #000,
    -1px -1px 0 #000;
  box-shadow: 0 4px 5px 0 rgba(0, 0, 0, 0.2);
}

@keyframes slidein-right {
  0% {
    left: 1080px;
  }
  20% {
    left: 0px;
  }
  90% {
    left: 0px;
  }
  100% {
    left: -1080px;
  }
}

#gif {
  position: absolute;
  z-index: 999;
  bottom: 0px;
  animation-name: slidein-right;
  animation-duration: 6s;
  animation-fill-mode: forwards;
}