如何使用 CSS 网格将框水平居中并将最后一行向左对齐？

div {
  /* Add resize property for dynamic width adjustment */
  resize: horizontal;
  /* Add justify-content property to center the boxes horizontally */
  justify-content: center;
}

ul {
  display: grid;
  /* Define the number of columns based on the number of boxes */
  grid-template-columns: repeat(auto-fit, 40px);
  /* Define the height of the boxes */
  grid-auto-rows: 40px;
  /* Add grid-gap property for spacing between boxes */
  grid-gap: 4px;
}