@abisbee : The blog page does not follow the restrictions of a static page. It cannot be protected using password for a static page.
For small screen replace the additional css with the following css.
Your current css
.page-id-3838 #main, .page-id-3848 #main {
width: 60%;
}
.page-id-3838 .sidebar-primary,
.page-id-3848 .sidebar-primary {
width: 32%;
}
Replace with the following css
@media screen and (min-width: 990px) {
.page-id-3838 #main, .page-id-3848 #main {
width: 60%;
}
.page-id-3838 .sidebar-primary,
.page-id-3848 .sidebar-primary {
width: 32%;
}
}
There is no any restrictions for the number of randomized images but limiting the images helps speeding the site.
Let me know if you have any more issues.
Regards,
Tikaram