html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

section.marco {
    border: 2px groove threedface;
    padding: 1em;
}

section.marco h2 {
    float: left;
    margin: -1.7em 0 0;
    padding: 0 .5em;
    background: #fff;
    font-size: 1em;
    font-weight: normal;
}