Transparency

Hi, im setting up my first wordpress website and dont have a lot of experience so if possible please leave a detailed answer.

Im trying to make the border and background of my easy heads up bar transparent, but if i remove the borders color in the heads up bar menu it will simply go grey (no issues with the background), so i found this in another topic

#ehu_bar {
border: none !important;
}

and added it to the bottom of my style.css file, but it didnt change anything, where did i go wrong?

(my site for reference: http://myifresh.tk/)

thanks in advance

https://wordpress.org/plugins/easy-heads-up-bar/