Q:

Extend text label into one line only?

Just created a registration form, and I want to extend a label text to be shown into one line. With CSS inspector found that class is:
.rmagic .rmrow .rmfield label 

and when I insert:
width: 600px;

It is working fine, but extends all other fields as well, and I just need the last one. I set a custom class to that field, called posledno but when I insert it into my custom CSS:
rmfield.form_1_1-element-18.posledno label {
  widht:600px;
}

It doesn't make any changes. How to extend this field ? Page example at the bottom.

A:

and I just need the last one

Since you need the last-child of an element, you're better off using the :last-child selector.
Here is what would work:
#rm_form_page_form_1_1_1 .rmfieldset .rmrow:last-child .rmfield label {
  width: 600px; 
  background-color: #f00; /** for easier identification */
}

Although I would recommend using % instead. (relative to the parent element unit)

