The HTML Style syntax lets you apply the same style attributes to a group of tags at the same time. You don’t need to define each tag’s styles separately. The following code uses the H1, H2, H3 and H4 tags in the body. However only H1, H2, H3 and H5 use the same style. Note that commas in the Style section separate tag names. In addition to making HTML code leaner, grouping makes styles easier to maintain.