9. debug.html
<body>
<h1>HTML debugging examples</h1>
<p>What causes errors in HTML?
<ul>
<li>Unclosed elements: If an element is <strong>not closed
properly, then its effect can spread to areas you didn't intend
<li>Badly nested elements: Nesting elements properly is also very
important for code behaving correctly. <strong>strong <em>strong
emphasised?</strong> what is this?</em>
<li>Unclosed attributes: Another common source of HTML problems.
Let's look at an example: <a href="https://daliborgogic.com/>link to
Dalibor's homepage</a>
</ul>
</body>
14. CSS is one of the core languages of the open web and is standardized across
browsers according to the W3C specification.
15. Cascading Style Sheets (CSS) is a stylesheet language used to describe the
presentation of a document written in HTML or XML (including XML dialects such as
SVG or XHTML).