教程
89个主题在此版面
-
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 …
-
- 0 篇回复
- 22 次查看
-
-
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…
-
- 0 篇回复
- 19 次查看
-
-
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 --> …
-
- 0 篇回复
- 22 次查看
-
-
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…
-
- 0 篇回复
- 19 次查看
-
-
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…
-
- 0 篇回复
- 19 次查看
-
-
HTML Styles The HTML style attribute is used to add styles to an element, such as color, font, size, and more. Example I am Red I am Blue I am Big The HTML Style Attribute Setting the style of an HTML element, can be done with the style attribute. The HTML style attribute has the following syntax: <tagname style="property:value;"> The property is a CSS property. The value is a CSS value. You will learn more about CSS later in this tutorial. Background Color The CSS background-color property defines the background color for an HTML element. Example Set the background color for a page to powderblue: <body style="background-colo…
-
- 0 篇回复
- 20 次查看
-
-
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…
-
- 0 篇回复
- 21 次查看
-
-
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…
-
- 0 篇回复
- 24 次查看
-
-
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…
-
- 0 篇回复
- 23 次查看
-
-
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 …
-
- 0 篇回复
- 22 次查看
-
-
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…
-
- 0 篇回复
- 23 次查看
-
-
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…
-
- 0 篇回复
- 22 次查看
-
-
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 …
-
- 0 篇回复
- 22 次查看
-
-
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:…
-
- 0 篇回复
- 19 次查看
-
