.margin-big{
  margin-bottom:60px;
}
.margin-small{
  margin-bottom:30px;
}
.tttech_3_cols_image-title{
  display:block;
  margin-bottom: 10px!important;
}
.tttech_3_cols_image-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  column-gap:20px;
  margin-bottom:40px;
}
.tttech_3_cols_image-grid .item img {
  max-height: 310px;
}
@media (max-width: 768px) {
  .tttech_3_cols_image-grid{
    grid-template-columns: repeat(1, 1fr);
    column-gap:10px;
  }
}