Formatting text in Drupal 7 not working I am new in Drupal 7 and I am trying to format my text using CKEditor. I started to create a basic page, I supplied the Title since it is a required field, then I put my text inside the body, there is a section in the Body that I want to use &lt;h1&gt; to make it look like the page title. So to do this, I clicked Heading 1 from the Format drop-down. On my editor the text now looks bigger, but when I tried to save it the &lt;h1&gt; tag was not implemented. I also tried to style my text using css but it didn't work.

How can I fix this?
You need to set the text format as Full HTML, text format select list will available below the body text area.

If the text format is specified as Plain text, then it will remove the html tags.

You can find out more information and best practices here - Specifying the allowed formats for user input