sicp/style.css

body {
  padding: 0 1.5rem;
  font-family: monospace;
}
#content {
  display: flex;
  flex-direction: column;
}
.footer {
  margin-top: 5rem;
  order: 9999;
}
a {
  color: purple;
  font-weight: bold;
}
p {
  margin: .25rem 0 .5rem;
}
.figure {
  padding: 0;
}
.figure p {
  text-align: left;
}
.header a {
  font-size: 20px;
  font-weight: bold;
}

#content {
  max-width: 50em;
}

img {
  width: 100%;
}

@media screen and (min-width: 960px) {
  .footer {
    bottom: 0;
  }
} 

@media screen and (max-width: 960px) {
  .outline-2 {
    clear: both;
  }
  img {
    margin-bottom: 2rem;
  }
}

.outline-3 {
  position: relative;
  margin-left: 1rem;
}
.outline-3::before {
  content: '';
  display: block;
  position: absolute;
  left: -.9rem;
  top: .4rem;
  width: .5rem;
  height: .5rem;
  border-radius: 1rem;
  background-color: purple;
  opacity: .5;
}

.org-ul {
  padding-left: 1.5rem;
  margin-top: 0;
}