Which pseudo-element allows you to insert content at the end of an element's content?

::after
::before
::first-line
::last-child

The ::after pseudo-element allows you to insert content at the end of an element's content. This is often used for adding decorative elements, icons, or additional information after an element's main content. For example, p::after { content: " (End of Paragraph)"; } would insert "(End of Paragraph)" after each

element.

Discuss it

You have a CSS variable named --gap, and you want to double its value and use it as a margin. How would you achieve this using CSS functions?

margin: calc(--gap * 2);
margin: calc(var(--gap) * 2);
margin: var(--gap * 2);
margin: var(--gap * 2);

To double the value of a CSS variable named --gap and use it as a margin, you should use the calc() function within the margin property. The correct option is margin: calc(var(--gap) * 2);, which properly references and doubles the variable value.

Discuss it

When an animation is paused using the animation-play-state property, its current state is determined by the ________ property.

animation-duration
animation-fill-mode
animation-iteration-count
animation-timing-function

The "animation-play-state" property in CSS is used to pause or resume an animation. When an animation is paused, its current state is determined by the "animation-fill-mode" property, which specifies whether the animation should retain its starting or ending keyframes when paused.

Discuss it

In the context of a CSS preprocessor like SASS, what does "nested rules" mean?

Nested rules in SASS allow you to define CSS rules within other rules using indentation, resulting in more organized and efficient CSS.
Nested rules in SASS involve the use of inline styles within HTML documents.
Nested rules in SASS mean creating circular references between styles, causing rendering errors.
Nested rules in SASS refer to rules that are hidden and cannot be accessed in the final CSS output.

In SASS, a CSS preprocessor, "nested rules" refer to the practice of defining CSS rules within other rules using indentation. This results in more organized and efficient CSS code, making it easier to understand and maintain. Nested rules help you avoid repetition and improve code structure.

Discuss it

For performance considerations, which CSS function can be used to move an element on the Z-axis without triggering layout or paint operations?

opacity: 0;
position: relative;
transform: translateZ(0);
z-index: 10;

To move an element on the Z-axis without triggering layout or paint operations, you can use the transform property with the translateZ(0) function. This is often used to create a new stacking context for the element, which can improve rendering performance. It doesn't affect the layout or paint and is ideal for off-screen animations or optimizing 3D transforms.

Discuss it

Which CSS property specifies the duration of an animation?

animation-duration
animation-length
animation-speed
animation-timing

The correct CSS property that specifies the duration of an animation is animation-duration. It allows you to define how long the animation will take to complete, typically in seconds (s) or milliseconds (ms). This property is crucial for controlling the speed and timing of animations.

Discuss it

What does the currentColor value represent in CSS?

The color currently being used for link text.
The color of the element's border.
The computed color value for text inside an element.
The current background color of an element.

The currentColor value in CSS represents the computed color value for text inside an element. It allows you to set properties like border or padding to the same color as the text content, ensuring consistent styling.

Discuss it

You've been asked to ensure that a custom web font falls back to a system font if it doesn't load within 3 seconds. How would you implement this?

Implement a custom JavaScript script.
Use the @font-face rule with a timeout attribute.
Use the font-display property with the value fallback.
Use the font-stack property.

To ensure that a custom web font falls back to a system font if it doesn't load within a specific time frame, you can use the font-display property with the value fallback. This CSS property controls how font faces are displayed and allows you to specify fallback behavior. When set to fallback, the browser will switch to the system font if the custom font doesn't load within the specified time, which is the desired behavior in this scenario.

Discuss it

When an element with position: absolute; is inside a positioned ancestor, to which element will it be positioned relative?

To the nearest sibling element.
To the parent element.
To the top of the document.
To the viewport.

When an element with 'position: absolute;' is inside a positioned ancestor, it will be positioned relative to its closest positioned ancestor. If there is none, it will be positioned relative to the viewport (the browser window).

Discuss it

In SASS/SCSS, the ________ directive allows for the creation of reusable chunks of CSS.

@extend
@import
@mixin
@use

In SASS/SCSS, the @mixin directive allows for the creation of reusable chunks of CSS. Mixins are blocks of styles that can be included and reused in different parts of your stylesheet. They are a powerful way to keep your styles modular and maintainable.

Discuss it