This might be something minor but I am somewhat picky in having consistent code. I've started getting into making child themes recently and on at least two of them have written some of my CSS like this with no space after the colon.
On the other hand I have written some I think with a space after the colon. So I have at least two child themes with inconsistent CSS. I realize that it is just personal preference for the space to make the code more neat but if I go back and add spaces to the end of all of the colons will this add much to the size of the CSS file and increase the page load time? I want to make it as easy as possible if/when it is necessary to modify the CSS again. Thanks for your suggestions.