To pass values when including a mixin in SASS/SCSS, you use the @include directive followed by the mixin name. The correct syntax is @include myMixin();. This allows you to apply the styles defined in the mixin and pass any necessary values as arguments inside the parentheses.

The default value of the flex-direction property in Flexbox is row. This means that flex items are laid out in a row, horizontally. If you want them to stack vertically, you need to set flex-direction to column.

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.

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.

To achieve this behavior, you should set grid-auto-flow to row dense. This will ensure that items overflowing the explicitly defined rows or columns are automatically placed into new implicit rows or columns, making the layout dynamic.

The flex-direction property in a flex container determines the direction in which flex items are laid out. It can be set to control whether the items are arranged in rows or columns, and the direction in which they flow.

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.

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.

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.

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.