In most cases, external CSS files will not work in HTML email. text-align: left; You see the black block and the white text in it. Now by using HTML blocks elements, we are going to create HTML form as follows: element! You can refer the output in the fugure below. It is a no-cost C++IDE created with for users who have high demands. When used together with CSS, the element can be used to style parts of the text: For a complete list of all available HTML tags, visit our HTML Tag Reference. If you are comfortable working with HTML code, and if a single design element won't meet your needs for the content block, then you can create much more complex content by working on the Design > HTML tab instead of the Design > Designer tab. The File Signature. Use custom HTML... 1. for