The CSS rule "ul > li" specifically targets only the direct child li elements of a ul element. It will not target li elements that are nested further within the hierarchy of the HTML structure.

The CSS pseudo-class :not() is used to select elements that do not match a specific criteria. It is used to exclude elements that would typically be selected by a CSS selector. For example, :not(.classname) selects all elements that do not have the specified class.

To create a smooth heartbeat animation that makes an icon grow and shrink, you should use the scale transformation with CSS animations. This allows you to scale an element up and down smoothly, ensuring it runs seamlessly in both directions.

The property commonly used to control the speed curve of a transition effect in CSS is transition-timing-function. This property allows you to specify how the intermediate property values are calculated over the duration of the transition, giving you control over the timing and pace of the transition.

To target all paragraphs immediately after an h2 element within the same container, you would use the selector h2 + p. This selector selects any

element that is immediately preceded by an

element.

When an element does not have a specific style defined but its parent does, it will inherit the styles from its parent. This inheritance is a fundamental concept in CSS and helps maintain consistency in the appearance of web pages.

Autoprefixing is the process of adding vendor-specific prefixes to CSS properties to ensure cross-browser compatibility. It automatically generates CSS rules with the necessary prefixes, like -webkit-, -moz-, or -ms-, making sure that your styles are correctly interpreted by different browsers. This helps avoid the need for writing separate CSS rules for each browser.

BEM (Block Element Modifier) methodology recommends using an underscore (_) to separate the block from the element in class names. This naming convention enhances code readability and helps identify the hierarchy of elements within a block. For instance, a button element inside a header block might be named header_button.

The CSS clamp() function is used to restrict a value between a specified minimum and maximum value. It allows for responsive design by ensuring that the value falls within this range, helping to maintain a consistent layout across different screen sizes.

SASS (Syntactically Awesome Style Sheets) is primarily used in web development for simplifying and organizing CSS. It introduces features like variables, nesting, and mixins, making your CSS more maintainable and efficient.

PostCSS is a popular tool used in web development to automatically add vendor prefixes to CSS properties. It is highly configurable and can be integrated into your build process. PostCSS, along with plugins like Autoprefixer, streamlines the process of making your CSS code cross-browser compatible by adding the necessary prefixes.

To create a media query for screens wider than 768px, you should use the @media rule, followed by the screen keyword (optional) and and (min-width: 768px). The correct option is @media screen and (min-width: 768px) { /* Styles go here */ }.