.section_title {
  margin-bottom: 40px; /* reduce bottom spacing */
}

.section_title h3 {
  margin-top: 0;        /* remove extra top margin */
  padding-top: 0;       /* remove extra padding */
}

.section-subtitle {
  margin-bottom: 20px;  /* tighten subtitle spacing */
}

.about-section .col-md-6 {
  padding: 0 15px;      /* keep side padding only */
}