.container {
  width: 1000px;
}

#coin {
  background: silver;
  border-radius: 100px;
  font-family: "Comic Sans MS", "Comic Sans", monospace;
  font-size: 20px;
  height: 200px;
  line-height: 180px;
  text-align: center;
  width: 200px;
}

img {
  margin-top: 30px;
  max-width: 400px;
}

@media (max-width: 767px) {
  .container {
    width: 100vw;
  }

  #coin {
    margin: 0 auto;
  }

  img {
    max-width: 100vw;
  }
}