body {
  background-color: #fff;
  font-family: sans-serif;
  margin: 4px;
  padding: 0;
}

p {
  background-color: #dfd;
}
code, span {
  display: inline-block;
}

code {
  width: 100%;
}

code span {
  width: 100%;
}

pre {
  background-color: #eee;
}

.red {
  background-color: #fee;
}

.blue {
  background-color: #eef;
}