The reason it does not work on that page is because it has a smaller sidebar.
Please test with this deeper nesting, I would do this however the login details are not working:
.spb-row-container.remove-element-spacing .spb-column-container.inset {
padding-left: 90px!important;
padding-right: 45px!important;
}
Once added, my tests indicate it would look like this: