There are many ways to center Bootstrap pictures, and you don’t have to use Flexbox. If you only need to center horizontally, the text-center class is enough; if you need to center vertically or multiple elements, Flexbox or Grid is more suitable. Flexbox is less compatible and may increase complexity, while Grid is more powerful and has a higher learning cost. When choosing a method, you should weigh the pros and cons and choose the most suitable method according to your needs and preferences.

There are several ways to modify XML formats: manually editing with a text editor such as Notepad; automatically formatting with online or desktop XML formatting tools such as XMLbeautifier; define conversion rules using XML conversion tools such as XSLT; or parse and operate using programming languages ??such as Python. Be careful when modifying and back up the original files.

Use Bootstrap to implement vertical centering: flexbox method: Use the d-flex, justify-content-center, and align-items-center classes to place elements in the flexbox container. align-items-center class method: For browsers that do not support flexbox, use the align-items-center class, provided that the parent element has a defined height.

H5 development tools recommendations: VSCode, WebStorm, Atom, Brackets, Sublime Text; Mini Program Development Tools: WeChat Developer Tools, Alipay Mini Program Developer Tools, Baidu Smart Mini Program IDE, Toutiao Mini Program Developer Tools, Taro.

To run Python code in Sublime Text, you need to install the Python plug-in first, then create a .py file and write the code, and finally press Ctrl B to run the code, and the output will be displayed in the console.

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

There are two ways to generate HTML code in Sublime Text: Using the Emmet plugin, you can generate HTML elements by entering an abbreviation and pressing the Tab key, or use a predefined HTML file template that provides basic HTML structure and other features such as code snippets, autocomplete functionality, and Emmet Snippets.

Use most text editors to open XML files; if you need a more intuitive tree display, you can use an XML editor, such as Oxygen XML Editor or XMLSpy; if you process XML data in a program, you need to use a programming language (such as Python) and XML libraries (such as xml.etree.ElementTree) to parse.