@samrizee Hi Samrawit, that would be at the bahmniapps project https://github.com/Bahmni/openmrs-module-bahmniapps. There go to ui>app>styles which contains style definitions for each bahmni module with some common styles. For registrations it would be inside the registration folder. Note that bahmni uses scss syntax. After you make the changes you need to deploy the project to your server. https://bahmni.atlassian.net/wiki/spaces/BAH/pages/1310748/Developer+s+Guide