.page-node-type-webinars .speakers .view-content .views-row .field-content  .speaker-img {
  width: 80px;
}
.page-node-type-webinars .speakers .view-content .views-row .field-content  .spearker-details {
  width: calc(100% - 100px);
}

@media (max-width: 767px) {
  .page-node-type-webinars .speakers .view-content {
    flex-direction: column;
  }
  .page-node-type-webinars .speakers .view-content .views-row {
    width: 100%;
  }
}