* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-size: 1rem;
  font-family: sans-serif;
  color: #333;
  line-height: 1.8;
  min-height: 100vh;
  border-left: 5px solid teal;
}

li code,
li kbd, p code,
p kbd {
  padding: 3px 5px;
  background-color: #eee;
  border-radius: 6px;
}

a {
  color: teal;
}

strong {
  color: #c10000;
}

h2 {
  margin-top: 150px;
  font-size: 26px;
  border-bottom: 1px solid #ddd;
}

h3 {
  margin-top: 100px;
}

h4 {
  margin-top: 60px;
}

h1 + *, h2 + *, h3 + *, h4 + *, h5 + *, h6 + * {
  margin-top: 20px;
}

ul, ol {
  margin: 40px 0;
}

li {
  margin: 10px 0;
}

img {
  max-width: 100%;
  height: auto;
}

figure {
  margin: 40px 0;
}
figure img {
  display: block;
  border: 1px solid #000;
  margin: 0 auto 10px;
}
figure figcaption {
  text-align: center;
}

pre {
  margin: 20px 0;
}
pre code {
  padding: 20px 40px;
  display: block;
  color: #eee;
  font-size: 0.75rem;
  line-height: 1.6;
  font-family: monospace;
  background: #333;
}

header,
main,
footer {
  margin: 0 auto;
  max-width: 980px;
}

header {
  padding: 20px 0;
}

main {
  padding: 0 20px;
  box-sizing: content-box;
}

footer {
  padding: 20px;
  text-align: center;
}

p + ul {
  margin-top: 20px;
}

.box {
  padding: 10px 20px;
  margin: 40px 0;
}
.box.--important {
  background: #ffedf0;
}
.box.--important strong {
  margin: 0 0 10px;
  display: block;
  font-size: 1.25rem;
}