codeigniter - html combo box or select box for multiple selection - Stack Overflow
Pretty Select Box Replacemenet With Pure JavaScript - tastySelect | CSS Script
HTML List Box - javatpoint
How To Make Select Menu Design Using HTML CSS And JavaScript | Custom Select Box Design - YouTube
GitHub - PhilippeMarcMeyer/vanillaSelectBox: A dropdown menu with lots of features that takes a select tag and transforms it into a single or multi- select menu with 1 or 2 levels
Custom Select Box Dropdown Menu In HTML CSS and Javascript | Custom Select Menu CSS | Dropdown Box - YouTube