Update _custom-forms.scss (#31693)
Update _custom-forms.scss (#31693)

Typo in box-shadow attribute, global variable used instead of local.

Co-authored-by: Arthur Shlain <da9673137e10ccf5f9d385a2fe20a567aa66f934@gmail.com>
Co-authored-by: XhmikosR <b60f67e10123951b393d9ba15dcf79efc14744bb@gmail.com>
nice-fungal/bootstrap,nice-fungal/bootstrap,nice-fungal/bootstrap