Twenty Fourteen grid view in custom page template

It seems that I’ve resolved this issue.
Added this to CSS editor to get the columns back:

.featured-content-inner {
overflow: hidden;
}

.featured-content .hentry {
width: 33.3333333%;
}

.featured-content .hentry {
float: left;
width: 33.3333333%;
}

.featured-content .entry-header {
height: 120px;
}

Also, had to change this parts to retain the contrast between the page numbers and the background:

.paging-navigation .page-numbers {
background: #BBBBBB;
}