* {
  box-sizing: border-box;
}

body {
  margin: 2em auto;
  width: 630px;
}

footer {
  text-align: right;
  margin-top: 2em;
}

input {
  width: 250px;
  margin-bottom: 0.5em;
}

img {
  display: block;
  margin: 0 auto;
}

label {
  width: 340px;
  float: left;
  text-align: right;
  margin-right: 2em;
  padding-top: 0.3em;
}

#displayDiv {
  margin-top: 1em;
  text-align: right;
}