What is the Critical Rendering Path, and how does it relate to CSS?
- CSS animation techniques
- Impact on Render Tree construction
- Method for optimizing JavaScript execution
- Sequence of steps in rendering a webpage
The Critical Rendering Path is the sequence of steps the browser takes to convert HTML, CSS, and JavaScript into pixels on the screen. Understanding this path helps optimize page load performance.
What are the advantages and potential downsides of using CSS inlining for critical above-the-fold content?
- Faster initial rendering, but increases page size
- Has no impact on rendering or page size
- Reduces page size and speeds up rendering
- Slows down rendering and increases page size
CSS inlining for critical above-the-fold content can lead to faster initial rendering but may increase page size due to duplicated styles.
To address accessibility concerns, alternative text for icon fonts can be provided using the ________ attribute.
- alt
- description
- icon-alt
- image-text
Accessibility is crucial in web development. Providing alternative text for icon fonts using the 'alt' attribute ensures that users with disabilities can understand the content. It's a fundamental practice for creating inclusive and accessible web applications.
When evaluating a site's SEO performance, an SEO specialist notices a drop in ranking. Upon investigation, they find that the site's text is not immediately visible to users due to slow-loading custom fonts. What CSS property should be optimized to improve this?
- font-display: swap
- font-loading: auto
- font-rendering: optimizeSpeed
- text-rendering: optimizeLegibility
To improve SEO performance and address slow-loading custom fonts, the font-display: swap property should be optimized. This ensures that text is immediately visible, and if the font is not available, a fallback font is used.
Which CSS property adjusts the space between characters in text?
- letter-spacing: 2px;
- word-spacing: 1em;
- text-spacing: 3px;
- character-spacing: 1.5em;
The correct option is letter-spacing: 2px;. This property controls the space between characters in text. The other options are either incorrect or do not exist in CSS.
How does the use of CSS variables (custom properties) impact the maintainability and performance of a website?
- Accelerating server response time
- Enhancing browser compatibility
- Optimizing database queries
- Reducing code redundancy
CSS variables improve maintainability by reducing code redundancy. They allow you to define values once and reuse them throughout the stylesheet, making updates easier and less error-prone.
How does the overflow property affect an element containing floated children?
- It causes the containing element to expand its height to fit the floated children.
- It has no effect on floated children.
- It hides the floated children if they extend beyond the boundaries of the containing element.
- It pushes the floated children to the right, creating space for them within the containing element.
The overflow property determines how the content that overflows the box is handled. If set to auto or hidden, the containing element will expand its height to enclose the floated children.
A CSS variable declared inside an element is only accessible within the ________ of that element.
- block
- container
- element
- scope
CSS variables have scope, and when declared inside an element, they are only accessible within the scope or block of that element.
To create a border that has rounded corners, you would use the border-radius: ________; property.
- border-curve
- border-round
- curve
- round
The correct answer is round. The border-radius property in CSS is used to create rounded corners for an element's border. Setting it to round will ensure that the corners are rounded, providing a softer and more aesthetically pleasing look.
A list item's marker can be positioned outside the list item content if the list-style-position property is set to ________.
- adjacent
- exterior
- inside
- outside
Setting the list-style-position property to outside positions the list item marker outside the list item content.