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

Comment in HTML:

Comment in JavaScript:

Single-line comment:

Two slashes, "//", in front of the code:

//document.write("Try this");

Multi-line comment:

Comment code in CSS:

/*
.tblemp {
color:red; }

*/

More details