.filter-buttons {
  display: flex !important;
  visibility: visible !important;
  position: relative;
  z-index: 10;
  justify-content: center;
  flex-wrap: wrap;
}

.filter-buttons .btn {
  display: inline-block !important;
  visibility: visible !important;
  position: relative;
  z-index: 10;
  padding: 8px 15px;
  font-size: 14px;
}

@media (max-width: 767px) {
  .filter-buttons .btn {
    padding: 6px 10px;
    font-size: 12px;
    margin: 3px;
  }
}

@media (max-width: 575px) {
  .speakers-section .row .speaker-block {
    width: 100%;
    margin: 15px auto;
  }
}