


CSS basics??Formatting text of element content using CSS_html/css_WEB-ITnose
The text properties of CSS are used to control the paragraph format of text, such as setting the first line indentation, paragraph alignment, word spacing, line spacing, etc.
1. Set first line indent of text : text-indent
Optional attribute values include: length/percentage
2. Set Text alignment : text-align
Optional attributes include: left / right / center, respectively indicating left alignment, right alignment, and center alignment
3. Settings Text decoration method: text-decoration
Optional attributes include: none/underline/overline/line-through/blink
4. Set text shadow effect : text-shadow
Optional attribute values include: none / color
5. Set line height : line-height
Attribute value can be number, length, percentage or normal
6. Set character spacing: letter-spacing
Optional attribute values include: none / auto / custom length
7. Set word spacing : word-spacing
Optional attribute values include: none / custom length
8. Set text case attribute : text-transform
Optional attributes include: capitalize turns the first letter of each word into uppercase
uppercase turns all letters in the element into uppercase
lowercase turns all letters in the element into lowercase
9 , Set blank display format : white-space
The way to enter spaces: one is " ", the other is the
mark. The white-space attribute in CSS is similar to pre<br>. Optional attribute values include: normal / pre / nowrap<br> 10. Set the font color and background of the <strong> element content </strong><br> (1) Setting Element's <strong> foreground color </strong>: color <br> value: can be a hexadecimal value, rgb() function or a color name recognized by CSS (such as white) <br> (2) Set <strong> background Color </strong>: background-color, the value is the same as the foreground color <br> (3) Set <strong> background image </strong>: background-image <br> The value is: the URL address of the image <br> (4 )Set <strong>layout of background image</strong>: background-repeat<br> Value: repeat / no-repeat / repeat-x / repeat-y<br> (5) Set whether the background image is an object content scrolling or Fixed: background-attachme<br> Value: sroll / fixed<br> (6) Set <strong> the position where the background image is displayed </strong>: background-position<br> Value: percentage, custom length (such as 100px,100px) / top / center / bottom / left / right<br> 11. Set <strong>list format</strong>: list-style-type<br> attribute value: disc default value, solid black dot<br> circle hollow circle<br> square square black block<br> decimal decimal number<br> lower-roman lowercase Roman numeral<br> upper-roman uppercase Roman numeral<br> lower-alpha lowercase letter<br> upper-alpha uppercase Letters <br> none None <br> You can also use list-style-image to replace the symbols in front of the list with graphics. If the list-style-type and list-style-image attributes are specified at the same time, it will only be displayed when the browser cannot display it. List-style-type only takes effect when pictures are used as bullet points. <br> 12. Style <strong> inheritance </strong>: used to save the CSS style rules specified for each level element in the document. For example, if a font color is set for , this color will be All elements within the page inherit this, unless other elements have their own specific styles. <br> <strong>Properties that cannot be inherited</strong>: margin, padding, border, background<br>

The function of HTML is to define the structure and content of a web page, and its purpose is to provide a standardized way to display information. 1) HTML organizes various parts of the web page through tags and attributes, such as titles and paragraphs. 2) It supports the separation of content and performance and improves maintenance efficiency. 3) HTML is extensible, allowing custom tags to enhance SEO.

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.

HTML is the cornerstone of building web page structure. 1. HTML defines the content structure and semantics, and uses, etc. tags. 2. Provide semantic markers, such as, etc., to improve SEO effect. 3. To realize user interaction through tags, pay attention to form verification. 4. Use advanced elements such as, combined with JavaScript to achieve dynamic effects. 5. Common errors include unclosed labels and unquoted attribute values, and verification tools are required. 6. Optimization strategies include reducing HTTP requests, compressing HTML, using semantic tags, etc.

HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.


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