Learn to code for free. We have styled the dropdown button with a background-color, padding, hover effect, etc. First thing first, make an HTML file for your menu. Besides this, you can fully customize background color, the thickness of menubar, etc by minor changing in CSS code. The drop-down can be nested up to 3 levels to make a multilevel dropdown menu. If I access each page individually, the drop down menu on each page work perfectly. 4. Dropdowns can be triggered from or