[JSWolf]

Originally Posted by Mr_H_Poirot

Thanks. It is below. I should say it is a bit of a mis-mash as I found a basic boilerplate one online and then I tweaked it

--

Spoiler:

body {
font-family: "Source Sans Pro", serif;
font-size: 1em;
font-weight: 300;
line-height: 140%;
}

/* Headings */

h1, h2, h3, h4, h5, h6 {
font-weight: 600;
line-height: 120%;
page-break-after: avoid;
text-align: left;
}
h1 {
font-size: 2.5em;
max-width: 80%;
line-height: 100%;
}
h2 {
margin: 1.5em 0 0.5em 0;
padding-top: 0.5em;
}
h3 {
margin: 1.5em 0 0.5em 0;
padding-top: 0.5em;
}

/* Paragraphs and related */

p, ul, ol, blockquote, dl {
max-width: 40em;
}
p {
margin: 0;
text-indent: 1.5em;
text-align: justify;
hyphens: auto;
-webkit-hyphens: auto;
}

/* Class for the first paragraph (no indent) */
p.no-indent {
text-indent: 0;
}

p.titlepageauthor {
text-indent: 0;
font-size: 2em;
}

sup {
vertical-align: super;
font-size: 0.8em;
line-height: 0;
}
li p { /* a paragraph inside a list item */
margin: 0;
}

/* Blockquotes */
blockquote {
margin: 0.5em 0 0.5em 0;
padding: 0.5em 1em 0.5em 1em;
font-size: 1em;
line-height: 120%;
border-left: 5px solid #ddd;
max-width: 20em;
}
blockquote p { /* a paragraph inside a blockquote */
margin: 0;
padding: 0;
}
li blockquote { /* a list item inside a blockquote
*/
margin: 1em 0;
}

/* Definition lists, which I use for side-notes */

dl {
color: #666;
border: 1px solid grey;
padding: 1em;
}
dt {
margin: 0 0 0.25em 0;
font-weight: 600;
}
dd {
}

/* Tables */

table {
border-collapse: collapse;
}
th, td {
border: 1px solid #ccc;
padding: 0.5em;
}

/* Code text */

pre, code {
font-family: "Source Code Pro", monospace;
white-space: pre-wrap;
background-color: #f9f9f9;
padding: 0.1em 0.3em;
border-radius: 0.2em;
font-weight: 200;
font-size: 0.9em;
}

/* Links */

a {
text-decoration: none;
color: #5f738c;
}

/*
* Title page
*/

.titlepage-title {
font-size: 2.5em;
font-weight: 700;
margin: 20% 0 0 0;
line-height: 100%;
}
.titlepage-subtitle {
font-size: 2.5em;
font-weight: 400;
margin: 0 0 1em 0;
line-height: 100%;
}
.titlepage-author {
font-size: 1.5em;
margin: 0 0 2em 0;
}
.titlepage-logo {
width: 100px;
}

/*
* Copyright page
*/

.copyright-logo {
width: 100px;
margin: 1em 0;
}

/*
* Table of contents
*/

.toc h2 {
font-weight: 400;
font-size: 1.25em;
margin: 1em 0 0.5em 0;
}
.toc ol {
margin: 0;
padding: 0;
}
.toc ul {
list-style-type: none;
margin: 0 0 1em 0;
padding: 0;
}
.toc li {
margin: 0 0 0.5em 0;
}
.toc a {
text-decoration: none;
}

That CSS is a bit of a mess. It could use some real cleaning up.

What you need is to know what you want and edit the element or class to do what it is you want.