body {
  font-family: "Avenir", "Arial", sans-serif;
  color: 222;padding: 0px 30px 10px 30px;
  margin: 0;
  background-color: FFF;
}

header {
  padding-top:  4px;
  height: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

main {
  height: calc(100vh - 160px);
  display: flex;
}

footer {
  margin: 20px 20px 10px 20px;
  height: 20px;
}

.p--footer {
  width: 100%;
  text-align: right;
}

nav {
  padding: 0px 10px 10px 0;
  display:  block;
  border-right: 1px solid #CCC;
  min-width: 15%;
  min-height: 100%;
}

section {
  padding: 0px 10px 10px 20px;
  width: 85%;
  min-height: 100%;
}

.serialization {
  font-family: 'SF mono', 'Courier', monospace;
  white-space: pre;
  background-color:  eeeeee;
  border-radius:  11px;
  padding:  15px;
}

input[type=submit]{
  padding: 10px 22px;
  background-color:  fff;
  border-radius:  6px;
  border: 1px solid #666;
}