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HTML Favicon A favicon is a small image displayed next to the page title in the browser tab. How To Add a Favicon in HTML You can use any image you like as your favicon. You can also create your own favicon on sites like https://www.favicon.cc. Tip: A favicon is a small image, so it should be a simple image with high contrast. A favicon image is displayed to the left of the page title in the browser tab, like this: To add a favicon to your website, either save your favicon image to the root directory of your webserver, or create a folder in the root directory called images, and save your favicon image in this folder. A common name for a favicon image is …
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HTML Images Images can improve the design and the appearance of a web page. Example <img src="pic_trulli.jpg" alt="Italian Trulli"> Example <img src="img_girl.jpg" alt="Girl in a jacket"> Example <img src="img_chania.jpg" alt="Flowers in Chania"> HTML Images Syntax The HTML <img> tag is used to embed an image in a web page. Images are not technically inserted into a web page; images are linked to web pages. The <img> tag creates a holding space for the referenced image. The <img> tag is empty, it contains attributes only, and does not have a closing tag. The <img> tag has …
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HTML Links Links are found in nearly all web pages. Links allow users to click their way from page to page. HTML Links - Hyperlinks HTML links are hyperlinks. You can click on a link and jump to another document. When you move the mouse over a link, the mouse arrow will turn into a little hand. Note: A link does not have to be text. A link can be an image or any other HTML element! HTML Links - Syntax The HTML <a> tag defines a hyperlink. It has the following syntax: <a href="url">link text</a> The most important attribute of the <a> element is the href attribute, which indicates the link's destination. The link text is…
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HTML Styles - CSS CSS stands for Cascading Style Sheets. CSS saves a lot of work. It can control the layout of multiple web pages all at once. CSS = Styles and Colors Manipulate Text Colors, Boxes What is CSS? Cascading Style Sheets (CSS) is used to format the layout of a webpage. With CSS, you can control the color, font, the size of text, the spacing between elements, how elements are positioned and laid out, what background images or background colors are to be used, different displays for different devices and screen sizes, and much more! Tip: The word cascading means that a style applied to a parent element will also apply to all …
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HTML Colors HTML colors are specified with predefined color names, or with RGB, HEX, HSL, RGBA, or HSLA values. Color Names In HTML, a color can be specified by using a color name: Tomato Orange DodgerBlue MediumSeaGreen Gray SlateBlue Violet LightGray Try it Yourself » HTML supports 140 standard color names. Background Color You can set the background color for HTML elements: Hello World Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis n…
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HTML Comments HTML comments are not displayed in the browser, but they can help document your HTML source code. HTML Comment Tag You can add comments to your HTML source by using the following syntax: <!-- Write your comments here --> Notice that there is an exclamation point (!) in the start tag, but not in the end tag. Note: Comments are not displayed by the browser, but they can help document your HTML source code. Add Comments With comments you can place notifications and reminders in your HTML code: Example <!-- This is a comment --> <p>This is a paragraph.</p> <!-- Remember to add more information here --> …
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HTML Quotation and Citation Elements In this chapter we will go through the <blockquote>,<q>, <abbr>, <address>, <cite>, and <bdo> HTML elements. Example Here is a quote from WWF's website: HTML <blockquote> for Quotations The HTML <blockquote> element defines a section that is quoted from another source. Browsers usually indent <blockquote> elements. Example <p>Here is a quote from WWF's website:</p> <blockquote cite="http://www.worldwildlife.org/who/index.html"> For 60 years, WWF has worked to help people and nature thrive. As the world's leading conservation organizati…
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HTML Text Formatting HTML contains several elements for defining text with a special meaning. Example This text is bold This text is italic This is subscript and superscript HTML Formatting Elements Formatting elements were designed to display special types of text: <b> - Bold text <strong> - Important text <i> - Italic text <em> - Emphasized text <mark> - Marked text <small> - Smaller text <del> - Deleted text <ins> - Inserted text <sub> - Subscript text <sup> - Superscript text HTML <b> and <strong> Elements The HTML <b> element defines bold text, without any e…
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HTML Block and Inline Elements Every HTML element has a default display value, depending on what type of element it is. The two most common display values are block and inline. Block-level Elements A block-level element always starts on a new line, and the browsers automatically add some space (a margin) before and after the element. A block-level element always takes up the full width available (stretches out to the left and right as far as it can). Two commonly used block elements are: <p> and <div>. The <p> element defines a paragraph in an HTML document. The <div> element defines a division or a section in an HTML document. Th…
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HTML Paragraphs A paragraph always starts on a new line, and is usually a block of text. HTML Paragraphs The HTML <p> element defines a paragraph. A paragraph always starts on a new line, and browsers automatically add some white space (a margin) before and after a paragraph. Example <p>This is a paragraph.</p> <p>This is another paragraph.</p> HTML Display You cannot be sure how HTML will be displayed. Large or small screens, and resized windows will create different results. With HTML, you cannot change the display by adding extra spaces or extra lines in your HTML code. The browser will automatically remove any extra sp…
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HTML Headings HTML headings are titles or subtitles that you want to display on a webpage. Example Heading 1 Heading 2 Heading 3 Heading 4 Heading 5 Heading 6 HTML Headings HTML headings are defined with the <h1> to <h6> tags. <h1> defines the most important heading. <h6> defines the least important heading. Example <h1>Heading 1</h1> <h2>Heading 2</h2> <h3>Heading 3</h3> <h4>Heading 4</h4> <h5>Heading 5</h5> <h6>Heading 6</h6> Note: Browsers automatically add some white space (a margin) before and after a heading. Headings Are Important Search engi…
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HTML Attributes HTML attributes provide additional information about HTML elements. HTML Attributes All HTML elements can have attributes Attributes provide additional information about elements Attributes are always specified in the start tag Attributes usually come in name/value pairs like: name="value" The href Attribute The <a> tag defines a hyperlink. The href attribute specifies the URL of the page the link goes to: Example <a href="https://www.w3schools.com">Visit W3Schools</a> You will learn more about links in our HTML Links chapter. The src Attribute The <img> tag is used to embed an image in an HTML page. T…
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HTML Elements An HTML element is defined by a start tag, some content, and an end tag. HTML Elements The HTML element is everything from the start tag to the end tag: <tagname>Content goes here...</tagname> Examples of some HTML elements: <h1>My First Heading</h1> <p>My first paragraph.</p> Start tag Element content End tag <h1> My First Heading </h1> <p> My first paragraph. </p> <br> none none Note: Some HTML elements have no content (like the <br> element). These elements are called empty elements. Empty elements do not have an end tag! Nested HTML Elements …
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HTML Basic Examples In this chapter we will show some basic HTML examples. Don't worry if we use tags you have not learned about yet. HTML Documents All HTML documents must start with a document type declaration: <!DOCTYPE html>. The HTML document itself begins with <html> and ends with </html>. The visible part of the HTML document is between <body> and </body>. Example <!DOCTYPE html> <html> <body> <h1>My First Heading</h1> <p>My first paragraph.</p> </body> </html> The <!DOCTYPE> Declaration The <!DOCTYPE> declaration represents the document type, and help…
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HTML Editors A simple text editor is all you need to learn HTML. Learn HTML Using Notepad or TextEdit Web pages can be created and modified by using professional HTML editors. However, for learning HTML we recommend a simple text editor like Notepad (PC) or TextEdit (Mac). We believe that using a simple text editor is a good way to learn HTML. Follow the steps below to create your first web page with Notepad or TextEdit. Step 1: Open Notepad (PC) Windows 8 or later: Open the Start Screen (the window symbol at the bottom left on your screen). Type Notepad. Windows 7 or earlier: Open Start > Programs > Accessories > Notepad Step 1: Open TextEdi…
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HTML Introduction HTML is the standard markup language for creating Web pages. What is HTML? HTML stands for Hyper Text Markup Language HTML is the standard markup language for creating Web pages HTML describes the structure of a Web page HTML consists of a series of elements HTML elements tell the browser how to display the content HTML elements label pieces of content such as "this is a heading", "this is a paragraph", "this is a link", etc. A Simple HTML Document Example <!DOCTYPE html> <html> <head> <title>Page Title</title> </head> <body> <h1>My First Heading</h1> <p>My first …
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HTML Tutorial Learn HTML HTML is the standard markup language for Web pages. With HTML you can create your own Website. HTML is easy to learn - You will enjoy it! HTML Tutorial Study our HTML Tutorial for free, no registration needed. Learn HTML Now » OR HTML Course + Certificate Upgrade your learning with our interactive HTML Course and Get Certified. Upgrade to our HTML Course 🏁 Tip: Sign in to track your progress. Learning by Examples With our "Try it Yourself" editor, you can edit the HTML code and view the result in the browser:…
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Keystore 是基于 Invision Community 5（IPS 5）的授权与发卡解决方案，覆盖“商品管理 → 卡密发放 → 授权校验 → 订单追踪”的完整闭环。它将验证服务与后台管理深度整合，提供即插即用的商业化基础设施。 - 组成 - 验证服务端：内置接口负责授权解密与完整性校验、时间窗校验、设备/域名绑定与证书签名。 - 客户端校验：发行版内置加固校验流程（HTTPS 强制、域名白名单、固定 UA、Base64URL 打包）。 - 后台管理：发卡商品（无价格字段）、卡密库、订单流转与日志审计，聚焦发卡与授权本身。 - 工作流 1) 创建发卡商品并配置卡密 → 2) 交付卡密给最终用户 → 3) 客户端发起加密验证 → 4) 服务端返回授权结果与约束（含签名/证书） → 5) 后台实时可视订单与授权状态。 ## 关键特性 - 安全通信：AES‑256‑CBC 加密 + Base64URL 打包 + HMAC 完整性校验 - 反篡改：固定 HTTPS 验证域名白名单，内置 UA，禁用明文回退 - 授权约束：支持域名/设备绑定与指纹校验，防止传播滥用 - 灵活发卡：卡密批量导入/生成，库存可视与状态管理 - 订单追踪：订单列表、状态流转与审计信息 - 轻量后台：发卡商品、卡密、订单一体化管理（无商品价格字段，更贴合外部商店结算） - 兼容性：适配 IPS 5.0.x，遵循框架规范，易于二开 Keystore-Invision Community 卡密发行系统 - Invision Community - OKAA ## 适用场…
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XFRM Right Sidebar Pro 是一款专为 XenForo 资源管理器（XFRM）设计的高级边栏增强插件。通过创新的下载按钮集成技术和精美的卡片式设计，为您的资源页面带来前所未有的用户体验提升。 已经开发完成， 正式上线！这是付费版本，免费版本请在本站查找相关文件！
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HTML Computer Code Elements HTML contains several elements for defining user input and computer code. Example <code> x = 5; y = 6; z = x + y; </code> HTML <kbd> For Keyboard Input The HTML <kbd> element is used to define keyboard input. The content inside is displayed in the browser's default monospace font. Example Define some text as keyboard input in a document: <p>Save the document by pressing <kbd>Ctrl + S</kbd></p> Result: Save the document by pressing Ctrl + S HTML <samp> For Program Output The HTML <samp> element is used to define sample output from a computer program. The c…
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HTML Form Elements This chapter describes all the different HTML form elements. The HTML <form> Elements The HTML <form> element can contain one or more of the following form elements: <input> <label> <select> <textarea> <button> <fieldset> <legend> <datalist> <output> <option> <optgroup> The <input> Element One of the most used form elements is the <input> element. The <input> element can be displayed in several ways, depending on the type attribute. Example <label for="fname">First name:</label> <input type="text" id="…
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HTML Form Attributes This chapter describes the different attributes for the HTML <form> element. The Action Attribute The action attribute defines the action to be performed when the form is submitted. Usually, the form data is sent to a file on the server when the user clicks on the submit button. In the example below, the form data is sent to a file called "action_page.php". This file contains a server-side script that handles the form data: Example On submit, send form data to "action_page.php": <form action="/action_page.php"> <label for="fname">First name:</label><br> <input type="text" id="fname" name="fname…
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HTML Forms An HTML form is used to collect user input. The user input is most often sent to a server for processing. Example The <form> Element The HTML <form> element is used to create an HTML form for user input: <form> . form elements . </form> The <form> element is a container for different types of input elements, such as: text fields, checkboxes, radio buttons, submit buttons, etc. All the different form elements are covered in this chapter: HTML Form Elements. The <input> Element The HTML <input> element is the most used form element. An <input> element can be displayed in …
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HTML Versus XHTML XHTML is a stricter, more XML-based version of HTML. What is XHTML? XHTML stands for EXtensible HyperText Markup Language XHTML is a stricter, more XML-based version of HTML XHTML is HTML defined as an XML application XHTML is supported by all major browsers Why XHTML? XML is a markup language where all documents must be marked up correctly (be "well-formed"). XHTML was developed to make HTML more extensible and flexible to work with other data formats (such as XML). In addition, browsers ignore errors in HTML pages, and try to display the website even if it has some errors in the markup. So XHTML comes with a much stricter error handling.…
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HTML Uniform Resource Locators A URL is another word for a web address. A URL can be composed of words (e.g. w3schools.com), or an Internet Protocol (IP) address (e.g. 192.68.20.50). Most people enter the name when surfing, because names are easier to remember than numbers. URL - Uniform Resource Locator Web browsers request pages from web servers by using a URL. A Uniform Resource Locator (URL) is used to address a document (or other data) on the web. A web address like https://www.w3schools.com/html/default.asp follows these syntax rules: scheme://prefix.domain:port/path/filename Explanation: scheme - defines the type of Internet service (most common i…
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