section background colour changes

Section / Advanced / CSS 

/*background colour*/
.el-section {
background: #2fa836;
}

open up padding under the content of an accordion

.el-item > .uk-accordion-content {
margin-bottom: 20px;
}

Settings / Custom Code / CSS/LES

.tm-header-mobile .uk-navbar-container {
  background-color: white;
}

Then because my example is white I added a box shadow to the navbar in the same colour as the menu area bar to separate the header from the body of the site.

Inverse / Nav Default / Item Active Colour

Divider color

Base / RH / Border

Make sure Fileinfo is ticked in the PHP Selector / PHP Extensions, area of blackbarn.

Disolve one image to the next - with text over the top

Slideshow element, and select Settings > Animation > Transition: Fade.

Style / Components / Title

/*drop down background colour*/
.uk-navbar-dropdown-nav > li.uk-active {
background-color: rgba(204, 204, 204, 0.8);
}

Add to Setings / Custom Code / CSS/LESS

/*making the drop shadow stay on the header*/
.uk-navbar-sticky:not(.uk-navbar-transparent) {
box-shadow: 1px 1px 20px 0 #000;
}