How to style the first letter or first line of a paragraph?

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To beautify the beginning of a paragraph to enhance visual appeal, a common practice is to use pseudo-elements of CSS or manually style the document. In web development, p::first-letter can be used to set the first letter style, such as enlarging, bolding, and discoloring, but it should be noted that it is only suitable for block-level elements; if you want to highlight the entire first line, use p::first-line to add styles; in document software such as Word, you can manually adjust the first letter format or create style templates, and InDesign has a built-in "first-sinking" function suitable for publishing and design; when applying, you need to pay attention to details, such as avoiding complex styles affecting reading and ensuring compatibility and format consistency.

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will-change is a CSS property that is used to inform browser elements in advance of possible changes to optimize performance. Its core function is to enable the browser to create layers in advance to improve rendering efficiency. Common values include transform, opacity, etc., and can also be separated by multiple attribute commas; it is suitable for non-standard attribute animations, complex component transitions and user interaction triggered animations; but it must be avoided abuse, otherwise it will lead to excessive memory usage or increased GPU load; the best practice is to apply before the change occurs and remove it after it is completed.

The CSS rule set consists of selectors and declaration blocks to define the style of HTML elements. 1. The selector specifies the target element, such as a tag, class, or ID; 2. Declare the block to contain attributes and values to control the appearance of the element. For example: p{color:blue;font-size:16px;} means selecting the paragraph and setting the text color and font size. Master these two parts to write effective CSS styles.

There are five ways to locate CSS: static, relative, absolute, fixed and sticky. static is the default positioning, following the document flow and does not support offset; relative moves relative to its original position and is still in the document flow; absolute is separated from the document flow, and is positioned relative to the nearest non-static positioning and ancestor positioning; fixed relative to the browser window, and is often used to fix the navigation bar; sticky is between relative and fixed, scrolling to a specific position and fixed, suitable for sticky heads. Mastering their behavioral differences is key to layout.