Change Line Color

I'm new to this and I need to change the line color at the top of the page that surrounds the page headings.

 

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.slider-container {
border-bottom: 3px double red!important;
}
.content-info {
border-bottom: dotted 1px red!important;
}

Inplace of "red" put your color code.

 

Thanks!!