An HTML element can also have one or more Attributes.
<tag attribute1="" attribute2="">marked up text</tag>
This example has an element called tag with two attributes.
Normally an attribute has a name which on the left of side of the '=' and a value on the right side of the '='.
It is also possible to have an attribute name only.
<tag attribute1>marked up text</tag>
We can also have an empty HTML element.