In a scenario where a website has multiple themes that can be switched by the user, what would be the best practice to handle the different CSS for themes in terms of performance?
- Combine all theme CSS into one file
- Load only the necessary CSS for the current theme
- Use JavaScript to switch between CSS files
- Use separate tags for each theme's CSS
Loading only the necessary CSS for the current theme ensures that only relevant styles are applied, reducing unnecessary load times and improving performance.
To create a shadow that does not blur or spread beyond the text itself, set the box-shadow ________ and ________ values to zero.
- blur, spread
- blur-radius, spread-radius
- color, opacity
- horizontal, vertical
Setting the box-shadow blur-radius and spread-radius values to zero creates a shadow that is sharp and does not extend beyond the text.
An element with position: ________ will behave like a position: relative element until the viewport reaches a certain scroll position.
- absolute
- fixed
- relative
- sticky
An element with position: sticky will behave like a position: relative element until the viewport reaches a certain scroll position, then it will be treated as position: fixed and will remain in place even during scrolling.
The property transition-________ is used to specify which CSS property the transition effect is for.
- delay
- duration
- property
- timing
The correct property is transition-property, which specifies the CSS property to apply the transition to. It helps define what properties will undergo the transition effect.
An element with position: ________ is positioned based on the viewport and stays fixed when scrolling.
- static
- relative
- absolute
- fixed
The correct option is fixed. When an element has a position: fixed, it is positioned relative to the viewport and remains fixed in its position even when the user scrolls the page.
In a project where you need to optimize loading times and manage multiple background images, which CSS asset management technique would be most effective?
- CSS Sprites
- Data URIs
- Image Spriting
- Lazy Loading
CSS Sprites involve combining multiple background images into a single image, reducing the number of server requests and optimizing loading times. This technique is beneficial for projects with a focus on performance optimization.
To control the white space around text within an element, the CSS property ________ is used.
- border
- margin
- padding
- spacing
The margin property in CSS is used to control the white space around the outside of an element. It defines the space outside the border, creating a gap between adjacent elements.
To create a fading transparent effect from the bottom to the top, you would use a linear-gradient starting with a color and ending with ________.
- White
- Transparent
- Black
- Gray
The correct option is "Transparent." This is because in a linear-gradient, the color transition from the starting color to transparent creates a fading effect, allowing the background to show through gradually.
In OOCSS, the concept of separating ________ from ________ helps in creating more reusable and maintainable CSS.
- HTML, JavaScript
- Layout, Design
- Structure, Presentation
- Style, Content
Structure, Presentation: In OOCSS (Object-Oriented CSS), separating the structure (HTML) from the presentation (CSS) is a fundamental principle. This separation enhances code reusability and maintainability.
To create a layout that adapts to different screen sizes, developers use ________ queries in CSS.
- Flex
- Grid
- Media
- Responsive
Developers use Flex queries in CSS to create layouts that adapt to different screen sizes. Flexbox is a one-dimensional layout method for laying out items in rows or columns.
How do CSS Variables enhance the maintainability of CSS code?
- They have no impact on maintainability
- They increase code complexity
- They only work with JavaScript
- They reduce redundancy in code
CSS Variables, also known as custom properties, help in reducing redundancy in code by allowing you to define values once and use them throughout the stylesheet. This enhances maintainability by making it easier to update styles globally.
Which CSS unit is fixed and is not affected by the current font size of the document?
- cm
- in
- mm
- pt
The 'pt' unit in CSS is fixed and is not influenced by the current font size of the document. Other units like 'mm,' 'cm,' and 'in' are physical units and can be affected by the font size, making 'pt' suitable for fixed-size elements in print styles or other specific cases.