Use an attribute selector:
button [class*="button-"] {
margin-right: 2rem;
}
Example Here
From MDN:
[attr*=value] - Represents an element with an attribute name of attr and whose value contains at least one occurrence of string "value" as substring.
button [class*="button-"] {
color: red;
}
As Chad points out, it is entirely possible that an element can contain a class such as this-is-my-button-class. In which case, that undesired element would be selected. In order to prevent this, you could use a combination of two selectors:
Example Here
button [class^="button-"],
button [class*=" button-"] {
margin-right: 2rem;
}
The selector button [class^="button-"] ensures that the element will be selected if it starts with button-. Since it's possible the element's first class doesn't start with button-, the selector [class*=" button-"] (note the whitespace), ensures that it will be selected.
