style.css

/* ROBOT.GIF from Giphy - https://giphy.com/gifs/robot-cinema-4d-eyedesyn-3o7abtn7DuREEpsyWY */

html {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 100vw;
  background: #45badd;
}

.container {
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: url("./robot.gif");
  background-size: contain;
  background-position: left center;
  background-repeat: no-repeat;
}

button {
  cursor: pointer;
  outline: none;
  width: 200px;
  height: 50px;
  font-family: "Courier New", Courier, monospace;
  font-size: 20px;
  color: white;
  background: #ff3482;
  border: none;
  border-radius: 5px;
  box-shadow: 2px 2px 20px 10px rgba(0, 0, 0, 0.2);
}

button:hover {
  filter: brightness(95%);
}

button:active {
  transform: scale(0.98);
}

button:disabled {
  cursor: default;
  filter: brightness(30%);
}

.bubble {
  position: relative;
  margin-bottom: 25px;
  max-width: 360px;
  max-height: 250px;
  padding: 5px;
  background: #ff3482;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  border-radius: 10px;
  border: #fff solid 1px;
  font-family: "Courier New", Courier, monospace;
  font-size: 20px;
  color: white;
  font-weight: 700;
  text-align: center;
}

.bubble:after {
  content: "";
  position: absolute;
  border-style: solid;
  border-width: 20px 20px 0;
  border-color: #ff3482 transparent;
  display: block;
  width: 0;
  z-index: 1;
  bottom: -20px;
  left: 165px;
}

.bubble:before {
  content: "";
  position: absolute;
  border-style: solid;
  border-width: 20px 20px 0;
  border-color: #fff transparent;
  display: block;
  width: 0;
  z-index: 0;
  bottom: -21px;
  left: 165px;
}

/* Media queries */
@media screen and (max-width: 1000px) {
  .container {
    background-size: cover;
    background-position: center center;
  }

  button {
    box-shadow: 5px 5px 30px 20px rgba(0, 0, 0, 0.5);
  }

  .bubble {
    width: 90vw;
    margin-bottom: 60vh;
  }
}