CSS: Cascading Style Sheet??Cascading Style Sheet
1. Markup selector
h1{color:red;font-size:10px;}
2. Category selector
.class{color:red;font-size:10px;}
3. ID selector
#id{color:red;font-size:10px;}
CSS filters are not browser plug-ins, nor do they comply with CSS standards, but are created by Microsoft A collection of functions specially developed to enhance browser functionality and integrated into IE browser.
Summary image:
CSS text effect: Made in order to make our webpage Beautiful, text effects are essential. Beautiful text makes our web page more beautiful.
Text attributes: font, size, color, thickness, italics, underline, overline, strikethrough, upper and lower case of English letters.
Example: The following text effect
Code:
body{ font-size:24px; /*文字的字体*/ color: #fff; /*文字的颜色*/ font-weight:bold; /*文字加粗*/ font-style:italic; /*文字斜体*/ /*文本阴影效果*/ text-shadow:0 0 5px #CCCCCC, 0 0 10px #CCCCCC, 0 0 15px #CCCCCC, 0 0 20px #095816, 0 0 25px #095816, 0 0 30px #095816, 0 0 50px #095816, 0 0 80px #095816, 0 0 100px #095816, 0 0 150px #095816; }Paragraph effect :
1 , Alignment: horizontal and vertical
2. Spacing settings: line spacing, character spacing
3. Initial letter enlargement
1. Style: picture border, picture scaling
2. Alignment: horizontal, vertical
3. Mixed layout: text wrapping
CSS can perform pixel-level precise control over the positioning and layout of objects in web pages, has the ability to edit web page objects and model styles, and can perform preliminary interactive design. Has strong legibility.

The usage methods of HTML tags and attributes include: 1. Basic usage: Use tags such as and, and add necessary information through attributes such as src and href. 2. Advanced usage: Use data-* custom attributes to achieve complex interactions. 3. Avoid common mistakes: Make sure the property values are surrounded by quotes. 4. Performance optimization: Keep it simple, use standard attributes and CSS class names to ensure that the image has alt attributes. Mastering these will improve web development skills.

HTMLtagsdefinethestructureofawebpage,whileattributesaddfunctionalityanddetails.1)Tagslike,,andoutlinethecontent'splacement.2)Attributessuchassrc,class,andstyleenhancetagsbyspecifyingimagesources,styling,andmore,improvingfunctionalityandappearance.

The future of HTML will develop in a more semantic, functional and modular direction. 1) Semanticization will make the tag describe the content more clearly, improving SEO and barrier-free access. 2) Functionalization will introduce new elements and attributes to meet user needs. 3) Modularity will support component development and improve code reusability.

HTMLattributesarecrucialinwebdevelopmentforcontrollingbehavior,appearance,andfunctionality.Theyenhanceinteractivity,accessibility,andSEO.Forexample,thesrcattributeintagsimpactsSEO,whileonclickintagsaddsinteractivity.Touseattributeseffectively:1)Usese

The alt attribute is an important part of the tag in HTML and is used to provide alternative text for images. 1. When the image cannot be loaded, the text in the alt attribute will be displayed to improve the user experience. 2. Screen readers use the alt attribute to help visually impaired users understand the content of the picture. 3. Search engines index text in the alt attribute to improve the SEO ranking of web pages.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML is used to build web page structure; 2. CSS is used to beautify the appearance of web pages; 3. JavaScript is used to achieve dynamic interaction. Through tags, styles and scripts, these three together build the core functions of modern web pages.

Setting the lang attributes of a tag is a key step in optimizing web accessibility and SEO. 1) Set the lang attribute in the tag, such as. 2) In multilingual content, set lang attributes for different language parts, such as. 3) Use language codes that comply with ISO639-1 standards, such as "en", "fr", "zh", etc. Correctly setting the lang attribute can improve the accessibility of web pages and search engine rankings.

HTMLattributesareessentialforenhancingwebelements'functionalityandappearance.Theyaddinformationtodefinebehavior,appearance,andinteraction,makingwebsitesinteractive,responsive,andvisuallyappealing.Attributeslikesrc,href,class,type,anddisabledtransform


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