What about some readability improvements?

[MarkTanashchuk]

What do you think of a small improvement to the appearance of the site?

Here's a list of suggested changes (Before/After photos in 1920x1080 resolution)

Code section fix

/* tour.css: end of file */
pre code {
  display: block;
}

Better links

/* tour.css: end of file */
ul li a {
  text-decoration: none;
}

ul li a:hover {
  color: #0396FF
}

Lighter header

/* tour.css: 33  */
.header {
  height: 40px;
  padding: 20px; /* <- was 4px */
  line-height: 40px;
  font-size: 28px;
  line-height: 28px;
  font-weight: bold;
  color: white;
  padding-left: 30px;
  background-color: #ff6801;
  box-shadow: 0 2px 3px #cf3801;
  grid-column: span 2;
}
/* tour.css: end of file */
.nav .toc a {
  text-decoration: none;
}

Aligned Text

/* tour.css: 20 */
h1,
p,
pre {
  margin-left: 20px;
  margin-right: 40px;
}

/* tour.css: 133 */
.bottomnav .back {
  float: left;
  padding-left: 20px;
}

/* tour.css: 305 */
.page p,
.page pre {
    font-size: 18px;
    line-height: 35px;
    color: #3c3b3d!important
}