client/app/components/PageHeader/index.less (18 lines of code) (raw):

.page-header-wrapper { margin: 15px 0 10px 0; display: flex; flex-direction: row; flex-wrap: nowrap; align-items: center; justify-content: stretch; h3 { margin: 0; line-height: 1.3; font-weight: 500; flex: 1 1 auto; } .page-header-actions { flex: 0 0 auto; padding: 0 0 0 15px; } }