/* Page background */

html {
  background-color: #f5f5f5;
}

/* Main document */

body {
  margin: 60px auto;
  width: 60%;
  max-width: 1100px;
  padding: 50px;
  background: white;

  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.6;
  color: #222;
}

/* Headings */

h1, h2, h3, h4 {
  font-weight: 600;
  margin-top: 1.6em;
}

h1 {
  border-bottom: 2px solid #ddd;
  padding-bottom: 0.3em;
}

h2 {
  border-bottom: 1px solid #e5e5e5;
  padding-bottom: 0.2em;
}

/* Paragraphs */

p {
  margin: 1em 0;
}

/* Links */

a {
  color: #0645ad;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Abstract block */

.abstract {
  margin: 2em 0;
  padding: 20px;
  background: #f8f8f8;
  border-left: 4px solid #ccc;
}

/* Code blocks */

pre {
  background: #f7f7f7;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 16px;
  overflow-x: auto;
  margin: 1.5em 0;
}

/* Inline code */

code {
  font-family: Consolas, "Courier New", monospace;
  background: #f7f7f7;
  padding: 2px 5px;
  border-radius: 4px;
}

/* Tables */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
}

th {
  background: #f2f2f2;
  text-align: left;
  padding: 10px;
}

td {
  border-top: 1px solid #ddd;
  padding: 10px;
}

/* Figures */

figure {
  text-align: center;
  margin: 2em 0;
}

figcaption {
  font-size: 0.9em;
  color: #666;
}

/* Images */

img {
  display: block;
  margin: 20px auto;
  max-width: 100%;
  height: auto;
}

/* Table of contents */

#TOC {
  background: #fafafa;
  border: 1px solid #e5e5e5;
  padding: 20px;
  margin-bottom: 40px;
}

/* Lists */

ul, ol {
  padding-left: 1.6em;
}

/* Responsive layout */

@media (max-width: 900px) {

  body {
    width: 90%;
    padding: 25px;
  }

}