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Detailed explanation of common background attributes background-color Sets the background color for the element valuedescribecolor_nameSpecifies that the color value is the background color of the color name (such as red).hex_numberSpecifies the background color whose color value is a hexadecimal value (for example #ff0000).rgb_numberTh ...

1, CSS introduction method 1. External style sheet ★ The so-called external style sheet refers to putting the CSS code and HTML code in different files separately, and then using the link tag in the HTML document to reference the CSS style sheet. Syntax: <link rel="stylesheet" type="text/css" href="File path" /> rel is the abbr ...

1, What are openlayers and what are the similar libraries Official website OpenLayers - Welcome openlayers is a library that displays and interacts with maps and geospatial data. In short, it is to draw a map, draw graphics, copy, or calculate relevant data on the map. Similar libraries: Baidu map, Gaode map, cesium; openlayers, Baidu and Ga ...

1,@media + rem First, write a meta tag in the head tag.  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1, minimum-scale=1">; /* initial-scale: Initial scale of the first entry page minimum-scale: Minimum scale allowed maximum-scale: Maximum magnification allowed user-scalable: Allow ...

Experiment 1 HTML Basics 1, Experimental purpose 1. Master common HTML language tags; 2. Use the text editor to create HTML documents and make simple form pages. 2, Experimental environment Computer, Windows operating system 3, Experimental content, source code and running results Experiment content: 1. Enter the following HTML code ...

1, What is the positioning layout?Using position, left, right, top and bottom, you can change the existing position of an element, for example, make the element jump out of the normal layout flow and fix it at a certain position on the page.2, Usage scenario1,position: staticThis is the default value of the element, which means that the element ...

1, Requirement description 1. Add After entering basic information (name, gender, age, city) through the input box, click the OK button to add an item of information to the table; Clicking reset will clear the information you entered. 2. Delete Click the delete button after each item of information in the table, and click OK in the pop-up O ...

catalogue 1. First, build the HTML structure: 2. Get element 3. The mouse passes through the small picture box, the Yellow occlusion layer and the large picture box are displayed, and 2 boxes are hidden when leaving 4. Get the coordinates in the mouse sub box 5. At this time, the mouse is located in the upper left corner of the Yellow mask ...

Introductionnext WebGL basic concepts , do a simple example of drawing a straight line.Mainly refer to the following two articles:Draw a pointDraw triangleOriginMy GitHubDraw a lineI won't explain each function in detail below. I prefer to have a sense of the overall logic first, and then check the data as needed during actual use.Create WebGL ...

Java learning punch in: day 89 javaWeb Java cultivation program (punch in day 85) Web project HTML+CSS + JavaScript+JQuery [JQuery is rarely used, only for animation] Web project [imitation Muke network project] Here, in order to get familiar with what I learned earlier, it refers to HTML and CSS plus JavaScript. If you need the so ...