Block Elements
Block elements always appear on a line line. Examples of these are the <h1> and <p> tags.
Inline Elements
Inline elements sit within a block level element and do not start on a new line. Examples of inline elements include the <strong>, <em>, and <img> tags. They always appear to continue on the sam line as their neighboring elements.
Changing an Inline Element to a Block Element
Sometimes, you need inline elements to behave like block elements. In order to do this, you use the style property display :
img { display:block;}
