@architkhanna, Bootstrap, jQuery, HTML5 and CSS3 are all available for you in Splunk Dashboard with Simple XML JS and CSS extensions. So, you have several options depending on your Skill Level
https://<yourSplunkServer>/en-US/static/docs/style/style-guide.html. Refer to this for Splunk's Style Guide. Bootstrapped Tabs, Modal View, Accordion etc.
While these are some of your starting points for using Splunk Web Framework as Web UI Development tool depending on your skill level. Virtually you can use any Web Technology like Angular, SVG, Canvas etc and if you lookup resources on Splunkbase there are some existing Apps around them already.
@architkhanna if you have further queries please post them here so that we can resolve the same. If not please Accept the question to mark the same as answered!