VSCodeisalightweight,cross-platformcodeeditorwithIDE-likefeaturesviaextensions,idealforwebandopen-sourcedevelopment;2.VisualStudioisafull-featured,Windows-onlyIDEdesignedforcomplex.NET,C ,andenterpriseapplications;3.VSCodeperformsfasteronlower-endma

The style of the link should distinguish different states through pseudo-classes. 1. Use a:link to set the unreached link style, 2. a:visited to set the accessed link, 3. a:hover to set the hover effect, 4. a:active to set the click-time style, 5. a:focus ensures keyboard accessibility, always follow the LVHA order to avoid style conflicts. You can improve usability and accessibility by adding padding, cursor:pointer and retaining or customizing focus outlines. You can also use border-bottom or animation underscore to ensure that the link has a good user experience and accessibility in all states.

User agent stylesheets are the default CSS styles that browsers automatically apply to ensure that HTML elements that have not added custom styles are still basic readable. They affect the initial appearance of the page, but there are differences between browsers, which may lead to inconsistent display. Developers often solve this problem by resetting or standardizing styles. Use the Developer Tools' Compute or Style panel to view the default styles. Common coverage operations include clearing inner and outer margins, modifying link underscores, adjusting title sizes and unifying button styles. Understanding user agent styles can help improve cross-browser consistency and enable precise layout control.

To use Markdown preview in VSCode, no additional installation is required. 1. Open or create a .md file; 2. Use Ctrl Shift V (Windows/Linux) or Cmd Shift V (Mac) shortcut keys, or open the preview through the right-click menu and command panel; 3. Preview is updated in real time by default, ensuring that automatic save is enabled to keep synchronized; 4. You can switch the synchronization scrolling function by right-clicking the preview area, and the preview supports GitHub-style Markdown and mathematical formulas (MarkdownAllinOne extension needs to be installed), and can customize the CSS style, which is easy to operate and complete.

InstalltheSQLToolsextensionandtheappropriatedriverextensionforyourdatabasetypeinVSCode.2.OpentheCommandPalette,select"SQLTools:NewConnection",chooseyourdatabasetype,andenterconnectiondetailssuchashost,port,username,password,anddatabasename.

Backdrop-filter is used to apply visual effects to the content behind the elements. 1. Use backdrop-filter:blur(10px) and other syntax to achieve the frosted glass effect; 2. Supports multiple filter functions such as blur, brightness, contrast, etc. and can be superimposed; 3. It is often used in glass card design, and it is necessary to ensure that the elements overlap with the background; 4. Modern browsers have good support, and @supports can be used to provide downgrade solutions; 5. Avoid excessive blur values and frequent redrawing to optimize performance. This attribute only takes effect when there is content behind the elements.

The best use scenario for CSS will-change attribute is to inform browser elements in advance of possible changes in order to optimize rendering performance, especially for animation or transition effects. ① It should be applied before the animation properties (such as transform, opacity or position) changes; ② Avoid premature use or long-term retention, and should be set before the change occurs and removed after completion; ③ It should only be used for necessary properties rather than using will-change:all; ④ Suitable for scenarios such as large scrolling animations, interactive UI components, and complex SVG/Canvas interfaces; ⑤ Modern browsers can usually optimize automatically, so there is no need to use will-change in all animations. Proper use can improve

Use the border attribute to set the dashed style to quickly create dotted lines, such as border-top:2pxdashed#000; 2. You can customize the appearance of the dotted line by adjusting the border width, color and style; 3. When applying the dotted line to dividers or inline elements, it is recommended to set height:0 or reset the default style of hr; 4. If you need to accurately control the length and spacing of the dotted line, you should use background-image and linear-gradient to cooperate with linear-gradient, for example, background:linear-gradient(toright, black33%, transparent33%) repe