Form Builder 4.0: Solid theme cannot be displayed properly in publish mode

One of our users mentioned an issue with the Solid theme. I cloned it on my end and I can replicate it. Although the Solid theme can be displayed properly in form builder v4, the layout of the theme has lots of display issues in publish and preview mode.

In build mode:

In publish & preview mode:

This is not caused by the Solid Theme. User has a very old form and associted form lacks some of the required properties to properly work in V4. After user opens his form in v4, some properties gets added and layout changes. Below there is a CSS code we can offer to get as close look as possible while maintaining the v4 compatibility.

https://trello.com/c/6GIS3tAO/607-solid-theme-cannot-be-displayed-properly-in-publish-mode

-- BLOCK BEGINS HERE --

li * {
font-family: verdana !important;
font-size: 12px;
color: #000;
}

li .form-label {
font-size: 12px;
}

.form-input-wide {
width: 100% !important;
}

.form-sub-label, .form-sub-label * {
color: #999 !important;
display: block !important;
font-size: 9px !important;
}

.form-header-group, .form-header-group * {
margin: 0;
padding: 1px 5px;
font-size: 11px;
color: #000 !important;
}

ul li {
padding-top: 1px;
padding-bottom: 1px;
}

ul li label {
padding: 5px !important;
font-weight: 200 !important;
font-size: 12px;
}

--- BLOCK ENDS HERE ---