body {
  font-family: helvetica;
}

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

#content {
  max-width: 75%;
  margin-top: 2.5em;
  margin-left: 4em;
  padding: 1em;
}

#content h1 h4 {
  line-height: 1.5em;
}

#content main {
  width: 70%;
}

#content aside {
  width: 30%;
}

@media (max-width: 768px) {
  #content {
    max-width: 100%;
    margin-top: 0.5em;
    margin-left: 1em;
    padding: 1em;
  }
}