Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
The sequence of sub-elements is the order of how each sub-element is placed inside the parent element. For most parent elements, their sub-elements can be placed in any order. But some parent elements require you to follow a predefined sequence. For example, element “html” requires that “head” to be placed first, and “body” to be placed second.
