Pattern:
element#IDNAME
Definition:
The element#IDNAME selector matches any element whose ID attribute has the value IDNAME. The IDNAME must immediately follow the "#".
Examples:
Assign styles to all elements with id="name"
*#name{ text-decoration: underline; }
or simply
#name { text-decoration: underline; }
Style all <h1> elements with id="title"
h1#title { font-family: fantasy; }