This section provides you some basics of CSS (Cascading Style Sheets).
CSS (Cascading Style Sheets) is a Web technology that allows you to control how Web page elements should be presented
in the browser window. CSS controls page element presentation by setting element's properties.
Here are some examples of page element properties that can be controlled by CSS:
Element Margin - How much white space there will be around the element.
Colors - What color to use for the background and the foreground text.
Text Font - What font and what size to use for the text.
Text Alignment - How text should be aligned, left, center, right, top, or bottom.
CSS also has a set of rule to allow you to select which specific element in the HTML document to apply the style properties.
Here are some common selection rules:
tagName {...properties...} - Selecting all elements that has the specified tag name.
tagName.className {...properties...} - Selecting all elements that has the specified tag name and the class name.
tagName.className#idName {...properties...} - Selecting all elements that has the specified tag name,
the class name and the id name.
The following CSS example tells the browser to select all <p class="bookToc" ...> elements
and apply the margin and font weight as specified:
p.bookToc {margin: 8px 25px 0px 25px; font-weight: bold;}
