What is the difference between HTML div and span elements?

The main difference between div and span in HTML lies in how they are used to structure and style content. Both are container elements, but they serve different purposes in terms of layout and presentation.

A div (division) is a block-level element. This means it takes up the full width available and always starts on a new line. Developers often use div to group larger sections of content, such as headers, footers, or paragraphs, and apply styles or layouts to them. For example, wrapping a section of text or images inside a div makes it easier to manage with CSS.

On the other hand, a span is an inline element. Unlike div, it doesn’t force a line break and only takes up as much space as its content. span is typically used for styling or highlighting a specific portion of text within a paragraph without disrupting the flow.

Here are the key differences:

• Display type: div → block-level, span → inline.
  
• Usage: div is for grouping larger sections, span is for styling or marking up small text parts.
  
• Layout behavior: div starts on a new line, while span continues on the same line.
  
• Styling: Both can be styled with CSS, but their effect differs due to block vs inline nature.
  

In short, use div when you need to organize content into sections and apply structural styling, and use span when you want to highlight or style a small piece of text within existing content. This distinction helps create clean, semantic, and manageable HTML code.