RinsD

No navigation tab here either. In the ‘menu’ tab at the bottom I can select a ‘primary menu’ and a ‘mobile menu’ but nothing for the single post page.

I have the same problem! Hoping for a fast solution..

Also resolved:

.post-content p,
p {font-size: 15px; color: #333;}
body {line-height: 1,4;}

Solved it, maybe not the most efficient code, but it works:

body .container.sidebar.widget_recent_entries {font size: 15px; font color: #333}

.widget-area {
font-size: 15px;
}

.widget ul {
font-size: 15px;
text-transform: none;
color: #333;
line-height: 1.6;
}

I have the same problem and the slider on homepage is enabled.