html multi select value from datalist to a single html textbox

https://github.com/selectize/selectize.js/fork

above is multi select from the datalist to the single textbox. I want this function working on my mvc/razor/c# web form.
however I do not like above selectize because it has css that make my own css website having some issues.

Do you know how to do select multiple value from html datalist to a single textbox (in javascript)?
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ITsolutionWizardAsked:
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ITsolutionWizardAuthor Commented:
any one can help?
Chinmay PatelChief Technology NinjaCommented:
I think it will be better and easier to fix the CSS problem then creating one. If you still want to explore others, there are couple of them available on the Selectize's site itself.
1. https://harvesthq.github.io/chosen/
2. https://select2.org/
3. http://xoxco.com/projects/code/tagsinput/

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