html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: sans-serif;
  background-color: #fff;
  color: #000;
  line-height: 1.5;
}

.container {
  min-height: 100%;
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
} 

h1 {
  margin: 10px;
}

p {
  margin-top: 5px;
}

img {
  width: 100px;
}

.choice {
  margin: 10px;
}

button {
  margin: 0 10px;
}

#rock img, #scissors img, #paper img {
  height: 120px;
  width: 120px;
}

button:hover {
  background-color: red;
}

@media (max-width: 576px) {
  #rock img, #scissors img, #paper img {
  height: 60px;
  width: 60px;
}
}