Colour not changing if edit made in css

[theremotedr]

Spent some time yesterday adding comments to all the # colour codes so i can easily advise myself what controls what.
No problem & a good few hours spent doing it.

Basic-style.css line 129 Yesterday was changed from #000000 to #FFFFFF but today has no affect at all.
This is for the Honda fly out menu in Keys & Remotes ios only as pc is fine

Yet again i have checked before asking here why that is ?
Currently set to #00FF00 so i notice a change whilst trouble shooting.

.srt-menu li li li a {
background:#00FF00; /* background colour honda fly out menu ios */

I have even removed the previos edits but no change so applied that edit again.

[theremotedr]

Following an otlder post i added the code elsewhere and now all ok BUT i would like to know why this has happened ?

Added this code below.

.srt-menu li li li a {
background-color:#AFDFF3!important; /* background colour honda fly out menu ios */
padding-left:15px;
text-align:center;

[mlegg]

Did you clear your web browser's css cache?
Follow this http://www.inmotionhosting.com/support/website/how-to/clear-browser-cache

[molendijk]

Following an otlder post i added the code elsewhere and now all ok BUT i would like to know why this has happened ?
What do you mean by added elsewhere?
The reason why it works now is, probably, the !important specification. It is used to override specifications made elsewhere for a class or an id.