step 7 added HTML Language Exercise as title
created h1 h2 headers step 10
created nav and ul lists
created h3 star cluster colonies, 3 paragraphs - cosmos, descended and birth, created aside tag #side_content and h4#side_title of corpus callosum
after h4 heading in aside element, created paragraph Another
created footer tag. in footer created span tag Carl sagan@2024 saganipsum.com