body {
   color: #000;
   line-height: 1.4;
   margin: 2em auto;
   max-width: 38em;
   padding: 0 1em;
}

header {
    margin-top: -20px;
	margin-bottom: -10px;
}

h1,h2,h3,h4,h5 {
   line-height: 1.2;
}

hr {
   background: #333;
   border: 0;
   height: 1px;
}

a {
   text-decoration: none;
}

a:hover {
   text-decoration: underline;
}

ul {
   list-style-type: square;
}

pre {
  background-color: #f5f5f5;
  border: 1px solid #ccc;
  border-radius: 2px;
  color: #333;
  font-family: monospace;
  line-height: 1.2;
  margin: 0 0 10px;
  overflow-x: auto;
  padding: 8px;
  white-space: pre;
  word-wrap: normal;
}

.paragraph-list li {
  margin: 1em 0;
}

.comment {
  font-style: italic;
  color: #888;
}

@media only screen and (max-device-width : 667px) {
  body {
    margin: 1em auto 2em auto;
  }

.topnav a {
  float: left;
  text-align: center;
  text-decoration: none;
}