CSS

flexbox gap

gap: 10px 20px; /* ⇳ and ⬄ */

row-gap: 10px; /* ⇳ only */
column-gap: 20px; /* ⬄ only */

gap css flex

    /* elements in a row */
	.row-flex-container {
      display: flex;
      flex-direction: row;
      column-gap: 2rem;
    }

	/* elements in a column */
    .column-flex-container {
      display: flex;
      flex-direction: column;
      row-gap: 2rem;
    }
      

css column gap flex

div{
    	column-count: 3;
        column-gap: 30px;
        background: yellow;
}