:root, body {
  height: 100%;
  margin: 0;
}

body, input, textarea, select, button {
  font-family: Verdana;
}

h1, h2, h3, h4, h5, h6 {
  font-family: Consolas, monospace;
  color: orange;
  background: repeating-linear-gradient(to right, black, black 1em, silver 1em, silver 1.518em);
}

label, dt, legend {
  color: orange;
  background: blue;
  border: 10pt dashed lime;
  display: inline-block;
}

h1, h2 {
  font-size: 200pt;
}

* h1:first-of-type {
  margin-top: 0;  
}

* ol:last-of-type {
  margin-bottom: 0;
}

section {
  padding: 5em 8em 5em 3em;
  overflow: hidden;
}

section.intro {
  background: linear-gradient(38deg, dodgerblue, aquamarine);
}

section.old-or-new {
  background: linear-gradient(137deg, darkorange, crimson);
}

section.features {
  background: linear-gradient(58deg, mediumvioletred, gold);
  column-width: 333px;
}

section.video {
  background: linear-gradient(92deg, mediumspringgreen, indigo);
}

section.cta {
  background: linear-gradient(92deg, cyan, lime);
}

footer {
  background: linear-gradient(111deg, chartreuse, teal);
}

fieldset {
  border-width: 20vmin;
  background: linear-gradient(11deg, silver 61.8%, lightslategrey);
}

@media screen and (max-width: 666px) {
  h1, h2 {
    font-size: 34pt;
  }

  ol {
    list-style-position: inside;
    padding: 0;
  }

  section {
    padding: 3em 0.5em;
  }
}