code {
  font-family: "Avenir Next", Calibri, Verdana, sans-serif;
  font-size: 14px;
  background-color: #EEEEEE;
  color: #FF3333;
}

body {
  font-family: "Avenir Next", Calibri, Verdana, sans-serif;
  font-size: 14px;
}

.header {
  font-family: "Avenir Next", Calibri, Verdana, sans-serif;
  font-size: 18px;
  position: fixed;
  left: 0;
  width: 100%;
  top: 0;
  text-align: center;
}

.footer {
  font-family: "Avenir Next", Calibri, Verdana, sans-serif;
  font-size: 15px;
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  text-align: center;
}