* {
  margin: 0;
  padding: 0;
  border: 0;
  box-sizing: border-box;
}
html, body {
  height: 100%;
  background-color: black;
}
#main {
  height: 100%;
  display: flex;
  justify-content: center;
}
#content {
  align-self: center;
}
#content img {
  width: 300px;
  height: 300px;
  max-width: 100%;
  height: auto;
}
#who {
  font-size: 1em;
  position: fixed;
  bottom: 0;
  right: 0;
  color: #373737;
}
@media only screen and (min-height: 400px) {
  #content img {
    width: 400px;
    height: 400px;
    max-width: 100%;
    height: auto;
  }
}