.wc-student-registration-course-participant {
    padding: 1em;
    border: 1px solid rgba( 0, 0, 0, 0.15 );
}

.wc-student-registration-course-participant:not(:last-child) {
    margin-bottom: 20px;
}

.wc-student-registration-course-participant h4 {
    margin-top: 0;
}