.grid-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.grid-item {
  flex: 1 1 calc(25% - 10px); /* 4 columns on larger screens */
  max-width: calc(25% - 10px);
  padding: 20px;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .grid-item {
    flex: 1 1 calc(50% - 10px); /* 2 columns on smaller screens */
    max-width: calc(50% - 10px);
  }
}
</style>