Created by: pvdlg
The variable $input-box-shadow-focus is currently defined as $input-box-shadow, rgba($input-border-focus, .6) !default that generate the invalid css box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), rgba(92, 179, 253, 0.6);
This PR add the missing h-shadow, v-shadow and blur. I set the default variable with the same value as the one defined for Bootstrap v3 here.