Remove white area above menu

Hi,

I have edited the menu, though there’s still a white stroke above the menu which I can’t get rid of. I’ve used below mentioned custom code to edit most of the menu, but someone I can’t get the top fully orange anymore. Basically the whole menu should move a bit higher so the white area isn’t shown.

Another problem is the mobile menu. Somehow there’s an hover effect for the submenu’s. I can’t figure out where to undo it. The end result should be to have the submenu titels fixed in white.

Website example: http://dades.website-id.nl/

.logo {
    position: absolute;
    background: #ff8c00;
    border-radius: 100%;
    width: 100px;
    height: 100px;
    text-align: center;
    margin-top: -10px;
}
.logo img {
	max-width: 80px;
	margin-top:11px;
}
.st_logo_mobile {
	display: none;
}

ul.slimmenu {
	width: auto;
}

ul.slimmenu li a {
	padding: 22px 22px;
}
ul.slimmenu li.has-submenu a {
	padding: 22px 26px 22px 19px;
}

.menu-collapser {
	background: none;
}
.menu-collapser .collapse-button .icon-bar {
	background: #fff;
	box-shadow: none;
}
ul.slimmenu.collapsed li a {
	padding: 14px 22px;
	background: #ff8c00;
}
.description {
    padding: 21px 0;
    display: block;
	font-style: italic;
	color: #ff8c00;
	margin-left:120px;
	position: absolute;
}