Miscellaneous

This category groups several useful CSS properties that don’t directly fall under colors, text, or background families.

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Standard properties (to use)

Table : Standard properties (to use)

Property	Description
cursor	Defines the appearance of the mouse cursor (e.g., pointer, text, wait).
filter	Applies a modern graphical filter (e.g., blur, grayscale, brightness).
opacity	Defines the element’s opacity/transparency (from 0 to 1).
visibility	Defines whether an element is visible (visible, hidden, collapse).
white-space	Defines how spaces and line breaks are handled (normal, nowrap, pre, etc.).
!important	Keyword that gives absolute priority to a CSS rule.

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Deprecated or specific properties

Some properties were used in older browsers (Internet Explorer, Netscape, old Mozilla).
They should not be used today.

Table : Deprecated or specific properties

Property	Status	Explanation
filter (old syntax)	Internet Explorer (deprecated)	Old version of CSS filters, replaced by the standard filter property.
-moz-opacity	Mozilla (deprecated)	Old property for handling opacity, replaced by opacity.
scrollbar-base-color	Internet Explorer (deprecated)	Defined the scrollbar’s main color.
scrollbar-face-color	Internet Explorer (deprecated)	Defined the central area color of the scrollbar.
scrollbar-track-color	Internet Explorer (deprecated)	Defined the track color of the scrollbar.
scrollbar-arrow-color	Internet Explorer (deprecated)	Defined the color of scrollbar arrows.
scrollbar-shadow-color	Internet Explorer (deprecated)	Defined the shadow color.
scrollbar-darkshadow-color	Internet Explorer (deprecated)	Defined the outer dark shadow color.
scrollbar-highlight-color	Internet Explorer (deprecated)	Defined the highlight color.
scrollbar-3dlight-color	Internet Explorer (deprecated)	Defined the 3D edge highlight color of the scrollbar.

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Key takeaways

• Always use standard versions: cursor, filter, opacity, visibility, white-space.
• Avoid !important except as a last resort, since it complicates CSS maintenance.
• Properties related to Internet Explorer scrollbars and old browsers are deprecated.
• To style a scrollbar today, use:

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: #888 #eee;
}

/* Chrome, Edge, Safari (WebKit) */
*::-webkit-scrollbar {
  width: 10px;
}
*::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 5px;
}
*::-webkit-scrollbar-track {
  background: #eee;
}