una/template/css/page_layouts.css

/* common styles */
.bx-layout-row.bx-lr-dump {
    display: block;
}
.bx-layout-row.bx-lr-dump .adm-bp-cell {
    margin-top: 0;
    margin-bottom: 0;
    border-style: dashed;
}

.bx-layout-col {
    float:left;
}


/* layout 1 column */
.bx-layout-1-column-column1 {
    float:none;
}


/* layout 3 columns */
.bx-layout-3-columns-column3,
.bx-layout-3-columns-column1 {
    width:33.3%;
}
.bx-layout-3-columns-column2 {
    width:33.4%;
}


/* layout bar content bar */
.bx-layout-bcb-bar1,
.bx-layout-bcb-bar2 {
    width:25.0%;
}
.bx-layout-bcb-content {
    width:50.0%;
}


/* layout 2 columns */
.bx-layout-2-columns-column1,
.bx-layout-2-columns-column2 {
    width:50%;
}


/* layout bar left */
.bx-layout-bar-left-bar {
    width:34%;
}

.bx-layout-bar-left-content {
    width:66%;
}


/* layout bar right */
.bx-layout-bar-right-bar {
    width:34%;
}

.bx-layout-bar-right-content {
    width:66%;
}