body {
  margin: 0;
  background: #f7f7f5;
  color: #222;
  font-family: "Open Sans", sans-serif;
  font-size: 20px;
}

main {
  width: min(900px, 82%);
  margin: 70px auto 100px;
}

header {
  margin-bottom: 60px;
  padding-bottom: 28px;
  border-bottom: 1px solid #cfcfca;
}

h1 {
  margin: 0 0 14px;
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
}

.summary {
  margin: 4px 0;
  font-size: 16px;
  color: #666;
}

section {
  margin: 55px 0;
}

h2 {
  margin: 0 0 22px;
  font-size: 22px;
  font-weight: 700;
}

.sample {
  margin: 12px 0;
  line-height: 1.55;
}

.sample span {
  display: inline-block;
  width: 245px;
  color: #777;
  font-size: 14px;
  font-weight: 400;
  font-style: normal;
  letter-spacing: normal;
  text-transform: none;
  text-decoration: none;
  vertical-align: baseline;
}

.weight-300 { font-weight: 300; }
.weight-400 { font-weight: 400; }
.weight-500 { font-weight: 500; }
.weight-600 { font-weight: 600; }
.weight-700 { font-weight: 700; }
.weight-800 { font-weight: 800; }

.style-normal { font-style: normal; }
.style-italic { font-style: italic; }

.spacing-normal { letter-spacing: normal; }
.spacing-wide { letter-spacing: 0.2em; }
.spacing-tight { letter-spacing: -0.05em; }

.transform-none { text-transform: none; }
.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

.decoration-none { text-decoration: none; }
.underline { text-decoration: underline; }
.overline { text-decoration: overline; }
.line-through { text-decoration: line-through; }