For high-DPI displays, how would you set a background image in CSS that optimizes for resolution without impacting lower resolution displays?
- background-image: url('[email protected]'), url('image.png');
- background-image: url('image.png') 2x;
- background-image: url('image.png') resolution(2dppx);
- background-image: url('image.png') density(2);
The correct option is background-image: url('image.png') 2x;. This CSS feature uses the 2x suffix to target high-DPI displays without affecting lower resolution displays. It's an effective way to provide optimized images for different screen resolutions, enhancing the user experience on high-DPI screens.
What is the stacking context, and how is it affected by different positioning schemes in CSS?
- context-order
- positioning
- stack-order
- z-index
The stacking context is a concept in CSS that refers to the order in which elements are stacked on top of each other. It is influenced by the z-index property. Different positioning schemes, such as relative, absolute, and fixed, create their own stacking context, affecting how elements are stacked in relation to each other.
In a flex container, setting flex-grow to a value of ________ will ensure the item grows to absorb any extra space.
- 0
- 1
- 2
- 3
Setting flex-grow to a value of 2 in a flex container means that the item will grow twice as much as other items in the container when there is extra space available.
In a flex container, what is the effect of setting the align-items property to baseline?
- Aligns flex items along their baselines within the flex container.
- Aligns flex items to the baseline of the container itself.
- Aligns flex items to the baseline of the first item in the container.
- Aligns flex items to the bottom of the container.
The align-items property in a flex container defines how flex items are aligned along the cross-axis. When set to baseline, items are aligned based on their baselines, creating a uniform baseline for all items.
When creating a gradient, what does the 'angle' parameter in a linear-gradient function define?
- The color stops
- The direction of the gradient
- The gradient size
- The shape of the gradient
The 'angle' parameter in a linear-gradient function defines the direction of the gradient. It specifies the angle at which the colors should blend, creating the gradient effect along that direction.
In a CSS gradient, the ________ keyword can be used to ensure that the colors are distributed evenly across the gradient.
- color-distribution
- evenly
- gradient-distribution
- linear
In a CSS gradient, the "evenly" keyword ensures that colors are distributed uniformly, creating a smooth transition across the gradient. This helps maintain a consistent color distribution in various design scenarios.
For responsive typography, the ______ CSS unit can scale font sizes based on the viewport height.
- vw
- vh
- %
- em
The correct option is b) vh. In CSS, the "vh" unit represents a percentage of the viewport height. This is useful for creating typography that adjusts based on the height of the user's screen.
Why is it recommended to use external stylesheets instead of inline styles for CSS?
- To improve browser compatibility
- To increase specificity
- To separate content from presentation
- To speed up rendering time
Using external stylesheets helps maintain a clear separation between content and presentation, making the code more modular and easier to manage. It also allows for better caching, leading to faster rendering times.
A developer wants a sidebar to be fixed on the desktop but static on mobile devices. Which CSS properties and values will they need to adjust using media queries?
- position: absolute, right: 0;
- position: fixed, left: 0, top: 0;
- position: static;
- position: sticky, top: 0;
When dealing with a sidebar that needs to be fixed on desktop and static on mobile, the appropriate approach is using position: sticky with a value of top: 0 within a media query. This ensures the sidebar remains fixed on desktop but becomes static on mobile.
What is a significant advantage of using SMACSS in large-scale web applications?
- Code Organization
- Maintainability
- Reusability
- Scalability
SMACSS emphasizes modular code organization, making it easier to scale, maintain, and reuse styles in large web applications.