Moving elements or shifting options from one drop down list box to other in JavaScript
forms - HTML multiple select box - Stack Overflow
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
How to add options to a select element using jQuery? - GeeksforGeeks
The selectmenu HTML Tag | CSS-Tricks - CSS-Tricks
Awesome CSS Select Styles You Can Use Right Now
Dropdown Search Box with HTML, CSS & JavaScript | Plantpot
Create Beautiful <SELECT> Dropdown With EasyDropDown.js - Hongkiat
Javascript HTML element get selected select option text value notepad ++ - YouTube
Custom Select Box Dropdown Menu In HTML CSS and Javascript | Custom Select Menu CSS | Dropdown Box - YouTube