border-bottom

I’m sorry about my English
I had a problem with i resolved at last. I will share it.
It took me hours before I found the solution.

I removed the header picture and placed a picture 1920 x 800 px in the background.
I wanted the background picture to appear around my pages and posts

I turned my pages to white (thanks to the help on this blog)

/*Page Background Color*/

#primary {
background: none repeat scroll 0 0 #ffffff;

}

/*Sidebar Widget Background Color*/

#secondary .widget, #footer-sidebar .widget {
background: none repeat scroll 0 0 #ffffff;

}

.single #content, .page #content {
background-color: #ffffff;
}
#content {
background-color: #ffffff;
}

There is the possibility to use opacity
just add: [opacity: .80;]

Then there was a problem:
A grey border in the bottom of the page accross the image.
I searched for the code in the source code and finally i found it.
When i adjusted the values the border bottom became invisible.

/*Making Border-bottom transparent*/

#parallax-bg {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 1;
border-bottom: solid 1px grey;
opacity: .0;
height: 600px;
}

Site: https://www.ibiza-appartementen-huren.nl (at work…)