Course Introduction：Creating a CSS timeline requires only HTML and CSS, no JavaScript required; 2. Use structured HTML containing time points and content; 3. Draw the central vertical line on the container through the ::before pseudo-element; 4. Use flexbox layout and positioning to control the arrangement of content on the left and right; 5. Add circular marking points for each time point; 6. Implement responsive design through media query, arrange the content on the left side and adjust the timeline position on the small screen; finally realize a beautiful and responsive vertical timeline, and is displayed with multiple devices.
2025-08-01 comment 0 956
Course Introduction：Bootstrap should be used to create responsive forms because it provides efficiency and consistency. 1) The basic layout uses form-control and form-group classes to make the form element structure clear. 2) Vertical layout is suitable for small screen devices, enhancing readability and usability.
2025-07-21 comment 0 993
Course Introduction：Bootstrap picture centering tips: Basics: Flexbox and Grid systems are used for layout, and text-center only centers the text baseline horizontally. Horizontal centering: Use justify-content-center attribute (Flexbox), or abuse margin: 0 auto; (unstable). Vertical centering: same as above, add align-items: center; the parent container needs to be set to fixed height. Responsive design: Use responsive classes to control layouts under different screen sizes. Common errors: Forgot to set height, abuse margin, ignore responsive design. Performance optimization: Select the appropriate image format, compress the image volume, and avoid excessively large images. **
2025-04-07 comment 0 855
Course Introduction：Overview: There are many ways to center images using Bootstrap. Basic method: Use the mx-auto class to center horizontally. Use the img-fluid class to adapt to the parent container. Use the d-block class to set the image to a block-level element (vertical centering). Advanced method: Flexbox layout: Use the justify-content-center and align-items-center properties. Grid layout: Use the place-items: center property. Best practice: Avoid unnecessary nesting and styles. Choose the best method for the project. Pay attention to the maintainability of the code and avoid sacrificing code quality to pursue the excitement
2025-04-07 comment 0 747
Course Introduction：The core method of implementing a dual-row navigation bar in Bootstrap is to combine structures and style adjustments. 1. Use nested containers to build a double-row structure, use two independent .navbars or .containers to place the top and bottom navigation content respectively, the first line places secondary information such as language switching and contact information, and the second line is used as the main menu; 2. Use Flex layout to merge into a container, set d-flexflex-column through the outer div to achieve vertical stacking, and manage styles and widths uniformly; 3. Optimization details include controlling spacing, responsive hiding the first line content, style isolation, and color matching coordination. These steps allow for a clear structure and responsive and friendly dual-line navigation bar.
2025-07-22 comment 0 751
Course Elementary 13819
Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.
Course Elementary 82352
Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).
Course Elementary 13173
Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.
Course Elementary 24624
Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.
Course Elementary 27483
Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.
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