Are all CSS properties inherited?

No, not all CSS properties are inherited. Only those properties that logically make sense to pass from parent to child are inherited, such as font properties (font-family, font-size), text color (color), list style (list-style), and some others. Properties related to sizes, positioning, margins, borders, and backgrounds are generally not inherited.

If you want a non-inherited property to apply to descendants, you can explicitly specify this through CSS or use the keyword inherit.

Example of an inheritable property:

body {
  color: blue; /* text color is inherited by descendants */
}

Example of a non-inherited property:

div {
  margin: 10px; /* not inherited by descendants */
}