On input focus change color of label. How?

Question

On input focus I want to change the color of the label element. How can I achieve this in less?

.control-label{
      color: @gray-light;
}
.co         


        

Answer 1

I don't think you can without changing your HTML, see also: Is there any way to hover over one element and affect a different element?, your elements should be direct siblings. (LESS don't help to solve your problem here, LESS generate CSS and it seems impossible to do in CSS)

Possible suggestion:

input:focus + .control-label
{
    background-color:purple;
    color: red;
}
.controls > input
{
    float:right;
}	

    
    Firstname

Or solve your problem with javascript: https://stackoverflow.com/a/20226218/1596547