body {
  background-image: url("backgroundLines.png");
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  background-attachment: fixed;
}

#background {
  background-image: url("background.png");
  background-size: 100%;
  position: fixed;
  top: 0;
  left: 20%;
  width: 60%;
  height: 100%;
  image-rendering: pixelated;
}

h1 {
  text-align: center;
  font-size: 2.5vw;
  position: relative;
  color: white;
}

h2 {
  text-align: center;
  font-size: 1.5vw;
  margin-bottom: 60px;
  position: relative;
  color: white;
}

h3 {
  font-size: 22px;
  margin-right: 24%;
  margin-left: 24%;
  position: relative;
  color: white;
}

p, ul, hr, button {
  margin-right: 24%;
  margin-left: 24%;
  position: relative;
  color: white;
}

a {
  color: #bbeeff;
}

a:visited {
  color: #bb88ff;
}

video, img {
  max-width: 52%;
  margin-right: auto;
  margin-left: auto;
  display: block;
  position: relative;
}

.paragraph {
  margin-bottom: 20px;
}

.formula {
  font-size: 30px;
}

.function {
  background-color: rgba(80, 80, 80, 0.5);
  padding: 10px;
  width: 40%;
  color: white;
  font-family: monospace;
}

.graph {
  margin-left: 20%;
  background-color: white;
  border: 2px solid #888;
  position: relative;
}

#tableOfContents {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 35%;
  background-image: linear-gradient(#f8ffff, #ccffff);
  border: 3px solid #446666;
  border-radius: 10px;
  padding-left: 10px;
  margin-bottom: 80px;
}

table, th, td {
  border: 1px solid black;
  border-collapse: collapse;
	padding-left: 2px;
	padding-right: 2px;
}

table {
	background-color: #8bd;
}