.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  margin: 0 -10px;
  max-width: 99%;
}

.gallery-item {
  flex-basis: 25%;
  padding: 10px;
  box-sizing: border-box;
  text-align: center;
}

.gallery-item img {
  width: 100%;
  height: auto;
}

.gallery-item h2,
.gallery-item p {
  margin: 0;
  text-align: left;
}

@media (max-width: 768px) {
  .gallery-item {
    flex-basis: 99%;
  }
}