Is it bad practice to comment out single lines of CSS with //?

Question

I have recently started using // to \"comment\" out single lines of CSS code. I understand that I am not actually commenting out the line; I am just breaking it

Answer 1

I don't know how future and/or exotic browsers will interpret non-official hacks like //, so I’d rather stick with the appropriate notation:

li {
    float:left;
    text-indent:0px;
    /* list-style-type:none; */
}