Creating the id styles
Now, let's repeat the classes of styles that we have already created for our examples, and let's add a set of styles for an id as well:
.muff01 { text-align:center; font-family: verdana, sans-serif; }
.muff02 { background-color:#fc0; color:#000; font-weight:bold; }
#tuff00 { background-color:#000; color:#fc0; font-weight:bold; font-size:140%;}
The last one is the one that will be applied to an id. Notice the way it is constructed. See that it begins with a hash mark:
#tuff00
The hash mark is a code. It signifies that the name, which follows it, is the id of a tag somewhere in a document.