demo-style.css

* {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

body {
  font-size: 14px;
  font-size: 1.4rem;
  line-height: 1.7;
  margin: 0;
  padding: 20px;
  font-family: 'Merriweather Sans','Helvetica Neue',Helvetica,Arial,sans-serif;
  background-color: #F0F0F0;
  color: #444444;
  font-weight: 300;
}

body,
a,
input,
teatarea,
select {
  color: #444444;
}

a {
  color: #444444;
}
a:hover {
  color: #00afe3;
}

/* 
// adds a symbol to all external links
a[href^="http://"]:after {
	content: " \21D7";
}
 */
a img {
  border: 0;
}

img {
  vertical-align: bottom;
}

ul {
  list-style-position: inside;
}

p {
  margin: 1rem 0;
}

h1, h2, h3, h4, h5, h6 {
  margin: 4rem 0 1rem 0;
  line-height: 1.2;
  font-family: 'Merriweather Sans', "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 400;
  color: #000;
}
h1 a, h2 a, h3 a, h4 a, h5 a, h6 a {
  text-decoration: none;
}
h1 a:hover, h2 a:hover, h3 a:hover, h4 a:hover, h5 a:hover, h6 a:hover {
  text-decoration: underline;
}

h1 {
  font-size: 30px;
  font-size: 3rem;
}
h1:first-of-type {
  margin-top: 1rem;
}

h2 {
  font-size: 26px;
  font-size: 2.6rem;
}

h3 {
  font-size: 24px;
  font-size: 2.4rem;
}

h4 {
  font-size: 22px;
  font-size: 2.2rem;
}

table {
  border-collapse: collapse;
}

thead th {
  background-color: #ccc;
}

tbody th {
  background-color: #ddd;
}

thead td {
  background-color: #eee;
}

tbody td {
  background-color: #f6f6f6;
}

th,
td {
  padding: 10px;
  border: 1px solid #ccc;
}