1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
<!DOCTYPE html> <style> div { width:300px; display:flex; justify-content:flex-end; } selectlist { width:100px; } selectlist::part(button) { border-style:none; background-color:rgba(0,0,0,0) } </style> <div> <selectlist> <option></option> </selectlist>