Adjust the viewer page according to W3C standard

[gbengaoluwadahunsi]

Summary I made the following changes to improve compliance with W3C standards:

Removed the unnecessary type attribute from

Motivation The motivation behind these changes is to adhere to best practices outlined by the W3C standards for HTML documents. According to W3C recommendations, the type attribute for

Testing These changes have been tested locally to ensure that they do not adversely affect the functionality or layout of the webpage. Additionally, the updated HTML markup has been validated using online HTML validation tools to confirm compliance with W3C standards.