Hi There,
Look for this block of code on your custom CSS
body .masthead {
position: absolute;
width: 100%;
z-index: 99999;
}
And update that to this:
.home .masthead {
position:absolute;
width:100%;
z-index:99999;
}
.single-post .forcefullwidth_wrapper_tp_banner {
margin-top: -90px !important;
}
Hope it helps, Cheers!