Do you make sure that all your tags are well formed ?

Do you know how to form HTML/XML tags on webpages? We need to make sure that all HTML/XML tags which open once, must be closed properly.

<div>
<p>Hello HTML</p>
</div>

Figure: Good Example

<breakfast_menu>

<food>

<name>Homestyle Breakfast</name>

</food>

</breakfast_menu>

Figure: Good Example

<div>

<p>Hello HTML

</div>

Figure: Bad Example

<breakfast_menu>

<food>

<name>Homestyle Breakfast

<price>$6.95

<description>two eggs

<calories>950

</food>

</breakfast_menu>

Figure: Bad Example