Refactor string parsing

Fixes jlmakes#531

Author: jlmakes

CHANGELOG.md

@@ -2,7 +2,13 @@
 
 ## Unreleased
 
-### [4.0.8] - 2021-03-02
+### Fixed
+
+- Styles applied using CSSOM don't drop `:` characters.
+
+## [4.0.8] - 2021-03-02
+
+### Fixed
 
 - Avoid Content Security Policy (CSP) violations. [@lambdacasserole](https://github.com/lambdacasserole) [#431](https://github.com/jlmakes/scrollreveal/pull/431)
 

src/instance/functions/style.js

@@ -225,9 +225,9 @@ export default function style(element) {
  */
 export function applyStyle (el, declaration) {
 	declaration.split(';').forEach(pair => {
-		const [property, value] = pair.split(':').map(s => s.trim())
+		const [property, ...value] = pair.split(':')
 		if (property && value) {
-			el.style[property] = value
+			el.style[property.trim()] = value.join(':')
 		}
 	})
 }