Block-level Elements	<div>	A block-level element always starts on a new line and takes up the full width available (stretches out to the left and right as far as it can).
		<h1> - <h6>
		<p>
		<form>
	Inline Elements	<span>	An inline element does not start on a new line and only takes up as much width as necessary.
		<a>
		<img>
	<div>	<div style="background-color:black;color:white;padding:20px;">	The <div> element is often used as a container for other HTML elements.
		<h2>London</h2>	The <div> element has no required attributes, but both style and class are common.
		<p>London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p>	When used together with CSS, the <div> element can be used to style blocks of content:
		</div>
	<span>	<h1>My <span style="color:red">Important</span> Heading</h1>	The <span> element is often used as a container for some text.
			The <span> element has no required attributes, but both style and class are common.
			When used together with CSS, the <span> element can be used to style parts of the text