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

For inline CSS comments, I use:

.myDiv {
    @width:750px;  
}

or any character you want (i.e. *@!ZZ) So, property becomes unknown and not readable by css.