How to alter format on a single page

Question

How can you alter a title on a single page for instance to change colour or be in bold without changing all other titles

Answer 1

Let's say the 'title' you want to be different is exactly one, e.g.

<h2>MyTitleNeedsToBeBold</h2>

than you either change it directly:

<h2 style="font-weight:bold;">MyTitleNeedsToBeBold</h2>

or via id-based CSS

<link rel="stylesheet" type="text/css" href="_themes/myStyles.css"/>
<h2 id="mySpecialTitle">MyTitleNeedsToBeBold</h2>

and have the following in your css file

#mySpecialTitle {
    font-weight:bold;
}

If you need this for all h2 tags:

h2 {
    font-weight:bold;
}

If you need it for some tags use the class attribute, etc. etc.

A nice CSS reference: http://www.w3schools.com/cssref/default.asp

Answer 2

You can apply changes to a single page by adding CSS into a Content Editor Web Part.

Add the CEWP to the page, click the link "Click here to add new content", then in the ribbon in the Markup section click HTML > Edit HTML Source and add your CSS there.