I solved it as @ShaunakD, proposed by overriding the class .jumbotron margin-bootomand making it margin-bottom: auto;.
Now my CSS code looks like this:
#paper {
background-image: url(../img/paper/paper.jpg);
width: 100%;
background-repeat: no-repeat;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
margin-bottom: auto;
}
source
share