CSS The method to set up a custom cursor is simple and practical. 1. Use the cursor attribute to support built-in styles (such as pointer, text) or image paths (such as .cur or .png); 2. It is recommended to use the .cur format and control the image size to within 32x32 or 48x48 pixels to optimize performance; 3. You can specify the hot spot position through coordinate points and set alternative cursors to ensure compatibility; 4. Note that Safari has limited support for .curr, cursor images cannot be loaded across domains, and some devices may ignore custom cursors. Rational use can enhance the visual style, but it should not be relied on to convey key functions.

Using cursor attribute of CSS to set a custom cursor is actually simpler than many people think. As long as you master the basic syntax and some precautions, you can easily add a personalized mouse pointer effect to the web page.

Two ways to customize the cursor

The cursor setting in CSS mainly relies on cursor attribute, and supports two common forms: using the system's built-in cursor style, or specifying an image as a custom cursor.

• The system default cursor : for example pointer , text , wait , etc. Just write the keywords directly.
• Custom image cursor : You need to provide an image path (usually in .cur or .png format), and you can also add a coordinate point to specify the click position.

For example:

 cursor: url('custom-cursor.png'), auto;

auto here is an alternative value. If the browser fails to load or does not support it, it will use the default cursor.

Select the appropriate cursor format and size

Not all images can be used as cursors smoothly. For compatibility and performance considerations, these principles are recommended:

• The best format is used for the .cur format, because it is designed for cursors and supports hotspot information.
• If using .png , try to keep the size within 32x32 or 48x48 pixels. Too large will affect the response speed.
• The hotspot location can be specified with the second parameter, such as:

 cursor: url('cursor.cur'), url('fallback.png') 10 10, pointer;

In the example above, if .cur is not available, .png will be attempted to load and the hotspot offset is set to (10,10), and the final pointer is the final alternative system cursor.

Browser compatibility and precautions

Although mainstream modern browsers support custom cursors, some details still need to be paid attention to:

• Safari has limited support for .cur files, so it is best to prepare .png alternatives.
• The cursor image cannot be loaded across domains, otherwise it will be ignored.
• Some operating systems or devices may ignore custom cursors completely (such as some touch devices).

Therefore, do not rely on the cursor style to convey key functions when used, it is more of a visual enhancement than an interactive requirement.

Basically that's it. Setting a custom cursor is not complicated, but it is easy to ignore format, alternatives, and compatibility issues. Just pay attention to these details, the website will look more stylish and practical.

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