The CSS property ________ can be used to create custom text outlines that enhance readability for users with low vision.
- font-outline:
- text-outline:
- text-shadow:
- text-stroke:
The correct CSS property for creating custom text outlines is text-outline. It is particularly useful for improving readability for users with low vision by adding a visible border around the text. The text-stroke property is not valid in CSS, and text-shadow is used for adding shadows, not outlines. font-outline is also not a valid CSS property.
To select an input element of type text that is currently in focus, you would use the :______ pseudo-class.
- focus
- active
- target
- input
The correct option is a) focus. The :focus pseudo-class in CSS is used to select an element that is currently in focus, such as an input field that the user is interacting with.
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.
The ________ CSS property is essential for defining the external source of a custom font.
- font-family
- font-source
- font-url
- font-import
The correct option is 'c) font-url'. This property is used to specify the external source of a custom font by providing the URL of the font file. It is commonly used in the @font-face rule.
How does the animation-fill-mode property affect the state of the animated element before and after the animation?
- The animated element doesn't retain any styles before or after the animation.
- The animated element retains final styles before the animation and initial styles after.
- The animated element retains its initial styles before the animation and final styles after.
- The animated element skips initial styles and retains final styles after the animation.
The animation-fill-mode property defines how the styles of the element are calculated before and after the animation. Setting it to forwards makes the element retain the final styles, while backwards retains the initial styles.
CSS Houdini's ________ API is instrumental in creating complex animations that react to user input.
- Animation
- Input
- Layout
- Paint
The Animation Worklet in CSS Houdini is crucial for creating complex animations that react to user input. It enables developers to create highly interactive and dynamic animations using a more performant approach.
What is the concept of "clearfix" in CSS and why is it important?
- A technique to prevent container collapse caused by floated elements
- Adding extra margin to clear floats
- Applying a clear property to fix layout issues caused by floats
- Using overflow property to clear floats
The "clearfix" technique is crucial for preventing the collapse of a container caused by floated elements. It typically involves clearing the floats within the container to ensure proper layout and avoid unexpected issues.
For a multi-layer background, the background-________ property can be used to control the positioning of each background layer.
- background-repeat
- background-position
- background-attachment
- background-layer
The correct option is background-position. This property allows you to control the positioning of each background layer individually, enabling you to create multi-layered backgrounds with precise placement.
When auditing a website for performance, a developer finds that the largest Contentful Paint (LCP) is delayed due to large CSS files. What steps can be taken to improve LCP related to CSS?
- Defer the loading of non-essential CSS
- Optimize and reduce the size of CSS files
- Split the CSS files into smaller, more focused files
- Use lazy loading for CSS files
Optimizing and reducing the size of CSS files can significantly improve the largest Contentful Paint (LCP) by ensuring faster loading times for critical styles, enhancing the overall user experience.
If a developer is troubleshooting an issue where a CSS rule is not being applied, and they notice that the rule is being overridden by another rule, what should they first check regarding the non-applied rule?
- Order of appearance in the stylesheet
- Presence of !important in the rule
- Selector type of the rule
- Specificity of the non-applied rule
When troubleshooting a non-applied CSS rule, checking the specificity is crucial. Specificity determines the weight of a selector, and a rule with higher specificity will override a rule with lower specificity. Understanding the specificity helps in resolving conflicts and ensuring the correct rule is applied.