Questions in: Usability Engineer

Right Answer:
XHTML stands for Extensible Hypertext Markup Language. It is stricter than HTML in terms of syntax and follows XML rules. XHTML was developed by the World Wide Web Consortium (W3C).

Right Answer:
No, you cannot use someone else's Style Sheet without permission, as it may violate copyright laws.

Right Answer:
To make a picture a link, wrap the `<img>` tag inside an `<a>` tag like this:

```html
<a href="URL">
<img src="image.jpg" alt="Description of image">
</a>
```

Right Answer:
The challenges people face with CSS layouts often stem from a lack of understanding of CSS's capabilities and best practices rather than inherent limitations of CSS itself. To improve the situation, better education and resources on CSS layout techniques, such as Flexbox and Grid, can help. While a dedicated "layout language" could provide additional options, enhancing CSS and promoting its proper use is generally more beneficial for web development.

Right Answer:
You can use `<span>` elements with different styles for each color within a single `<div>`. For example:

```html
<div class="post-title questionitem showquestion" data-question-id="25224">
<span style="color: red;">Red Text</span>
<span style="color: blue;">Blue Text</span>
<span style="color: green;">Green Text</span>
</div>
```

Right Answer:
The benefits of XHTML include improved error handling, stricter syntax rules that promote cleaner code, better compatibility with XML tools, and enhanced accessibility for assistive technologies.

Right Answer:
No, you cannot use XML namespaces in DTDs.

Right Answer:
XSLT is important in XHTML because it allows for the transformation of XML data into a format that can be displayed as XHTML, enabling dynamic content presentation and separation of data from its presentation.

Right Answer:
XHTML Modularization is a framework that allows for the creation of custom XHTML document types by combining different modules, enabling flexibility and reusability in web development.

Right Answer:
XHTML is a stricter and more XML-compliant version of HTML. It requires proper nesting of elements, closing of all tags, and the use of lowercase for tag names and attributes, while HTML is more lenient with these rules.

Right Answer:
No, CSS style sheets are not case sensitive for property names and values, but they are case sensitive for class and ID selectors.

Right Answer:
To add MIDI music to your web page, use the `<embed>` or `<audio>` tag. Here’s an example using the `<embed>` tag:

```html
<embed src="path/to/your/music.mid" autostart="true" loop="true" width="300" height="100">
```

Or using the `<audio>` tag:

```html
<audio controls>
<source src="path/to/your/music.mid" type="audio/midi">
Your browser does not support the audio tag.
</audio>
```

Right Answer:
Check if the CSS file is linked correctly in the HTML, ensure there are no syntax errors in the CSS, verify that the styles are not being overridden by other styles, and make sure the elements have the correct class names applied.

Right Answer:
To get rid of the gap under your image, set the image's display property to `block` using CSS:

```css
img {
display: block;
}
```

Right Answer:
To make your footer sit at the bottom of the page, you can use the following CSS:

```css
html, body {
height: 100%;
margin: 0;
}

.wrapper {
min-height: 100%;
display: flex;
flex-direction: column;
}

.footer {
margin-top: auto;
}
```

Wrap your content in a `.wrapper` div and place your footer inside it with the class `.footer`.

Right Answer:
Style Sheets, specifically CSS, are used to separate content from presentation, allowing for easier maintenance, consistent styling across multiple pages, improved load times, and better accessibility.

Right Answer:
A selector is a pattern used in CSS to select and style HTML elements based on their attributes, such as tag name, class, ID, or other attributes.