May I ask what technology is used for this slideshow_html/css_WEB-ITnose

To embed a video player with controls, you need to use a tag with controls attribute and specify a video file; to ensure compatibility, a variety of formats such as MP4, WebM and OGG can be provided, and the browser will select the first supported format to play; you can also add attribute enhancements such as autoplay, loop, muted and preload; you can achieve responsive layout by setting CSS styles such as width: 100%; it is recommended to use H.264-encoded MP4 files to ensure the best browser compatibility, and the final complete HTML structure contains alternate text to deal with browsers that do not support video tags.

HTML tables are used to organize data in rows and columns, suitable for displaying schedules, price plans, or statistics. 1. Create a table, define rows, define header cells, and define data cells. 2. Can be used and improve structural clarity. 3. Use colspan and rowspan to implement cross-column or cross-row cells. 4. Add borders, inner margins and alignment styles through CSS to improve the appearance. 5. Avoid common mistakes such as unclosed labels, abuse of table layouts, and ignoring scope attributes' impact on accessibility. 6. Tables should be used only to display table data, not page layout, which should use CSSFlexbox or Grid. Correct use of HTML tables can effectively present structured information.

The easiest way to embed videos using HTML is to use elements. 1. For self-hosted videos, use tags and add controls, width, height and other attributes, and ensure browser compatibility by providing MP4 and WebM formats; 2. You can select attributes such as autoplay, muted, loop, preload and other attributes to control playback behavior; 3. For platform videos such as YouTube, embedded sharing code should be used; 4. It is recommended to compress videos, adopt responsive design and test them in multiple browsers to ensure the best results.

To change the font size in HTML using inline CSS, use the style attribute on the HTML element and apply the font-size attribute of the CSS; for example, add style="font-size:16px;", style="font-size:2em;" or style="font-size:1.5rem;" to the tag to set the font size. Common units include pixels (px), em, rem, percentage (%) and keywords (such as large); suitable for quick style settings, debugging, mail templates, or temporary overwrite styles in a single element; although within

Use HTML elements to create modal or non-modal dialogs natively. 1. Use tags to define the dialog structure, which is hidden by default; 2. Show modal boxes and .close() are displayed through JavaScript's .showModal(), and close them. Support event control; 3. Use CSS to customize styles, including using ::backdrop to set the background layer; 4. Listen to cancel events and call preventDefault() to prevent the background from being clicked; 5. Set method="dialog" in the form to automatically close and return the button value when submitted, and finally get the result through dialog.returnValue, which is a kind of no need for a third

To link to Skype, you need to use the skype:URI scheme, which is implemented by creating a link in the format of skype:username?action in HTML. For example, using skype:echo123?call, you can make a Skype voice call, skype:echo123?call&video=true can initiate a video call, skype:echo123?chat can send instant messages, skype:echo123?add can add contacts, and skype: 1234567890?call can make an international phone number, provided that the user equipment has been installed and configured with the Skype application and the browser

Create an HTML button and set the click event to call the JavaScript function; 2. Use CSS to pin the button to the lower right corner of the page and set the hidden default state; 3. Listen to the scroll event through JavaScript, and display the button when the scroll distance exceeds 300px, and scroll smoothly to the top when clicked. Finally, a return to the top button to improve the user experience is realized, and the full functionality is completed in collaboration with HTML, CSS and JavaScript.

Use HTML to easily create range sliders, define the value range and step size by setting the min, max, value and step properties, display the values ​​in real time with the oninput event, and customize the style through CSS to improve the appearance, and then use JavaScript to achieve dynamic interaction, thereby building a complete and beautiful slider component.