; at the end of an inline .html styling.

Question

Is this required if there is only one style attribute?

Answer 1

no its not required if there is only one style attribute.

Answer 2

You can avoid the last semi colon ( ; ) at end of a declaration in inlined, as you can at end of a enclosed one by brackets:

body {
margin:0;
background:silver // is valid because just before a closing brackets
}
p {
text-indent:3ex;
/* ... */

But good practice is to always put the semi colon, so you get good reflexes, and avoid need to search the missing semi colon, after appending style somewhere :P