Merging of overwritten properties doesn't work !

[Allaoua9]

Input Css :

h2 { width: 100px; width: 200px; }

Output Css:
h2 { width: 100px; width: 200px; }

Expected Output CSS:
h2 { width: 200px; }

CleanCss version : 3.4.10.
No options passed.
Using it in node js :
const cleanCss = new CleanCss(); cleanCss.minify(css);

[jakubpawlowicz]

Sequential declarations are treated as redefining by default, but in this case the first declaration should indeed be dropped. Good catch!

[hostep]

@jakubpawlowicz, drawing your attention to #540 and probably #290 which look like very similar issues.