* refactor: 💡 update _typography stylesheet ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937 * refactor: 💡 update header margin styles into single rule ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937 * refactor: 💡 add remove-header-margin class ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937 * refactor: 💡 remove 'header' class ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937 * test: 💍 fix failing tests for branded-card in desktop ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937 * refactor: 💡 update style rule to use :where() ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937 * refactor: 💡 rename remove-header-margin to remove-margin ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937 * refactor: 💡 update style comment ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-11937