body, html{
  /*height: 100%;*/
  margin: 0;
  padding: 0;
}

body {
  font-family: "gill sans", "new baskerville", sans-serif;
  text-align: center;
  font-size: 14px;
}

div#calculator{
  margin:0;
  width: 40em;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
  padding: 0;
}

div#display{
  font-family: courier, monospace;
  padding: 5px;
  font-weight: normal;
  font-size: .8em;
  margin-bottom: 10px;
  
  height: 325px;
  /* If content exceeds 350px in height... */
  overflow: auto;
}

h1{
  font-size: 155%;
  letter-spacing: .2em;
  text-transform: lowercase;
  font-weight: normal;
  margin-top: 1em;
  margin-bottom: 0; /* collapse with h2 */
}

h2 {
  font-size: 100%;
  letter-spacing: .1em;
  font-weight: normal;
  margin-top: .2em;
}

h2 a {
  font-size: .9em;
  text-transform: lowercase;
  font-variant: small-caps;
}

p{
  margin-left: 10px;
  font-size: 90%; 
}

#theme {
  margin-top: 0.75em;
}

label, #theme {
  letter-spacing: .1em;
  text-transform: lowercase;
  font-size: .9em;
  font-variant: small-caps;
}

#theme a {
  text-decoration: none;
}

input#input {
  width: 23em;
  border: 1px solid black;
}

input#calc {
  width: 8em;
  border: 1px solid #000;
  text-transform: lowercase;
  font-variant: small-caps;
  float: right;
}

input.text{
  width: auto;
}

img, a img {
  border: 0;
  background: inherit;
}