[Plugin: Easy Heads Up Bar] Hi, possible to remove white line under bar?

Sure you can just target it with css.
#ehu_bar {
border: none !important;
}

Perfect! Thank you!

I put this code

#ehu_bar {
border: none !important;
}

at the bottom of stylesheet.css but nothing happens. Where I’m wrong?

Thanks in advance

stylesheet.css affects the Easy Heads Up Bar’s admin area – it is not loaded in the front-end – if you put that in your themes styles.css it’ll work

how do I change the color of the border?

You can do that using css too

#ehu_bar {
  border-bottom-color:#ff0000  !important;
}

See https://www.w3schools.com/cssref/pr_border-bottom_color.asp for more info