How to style html selector as menu dropdown?

Question

css

Actually a subject. You can use vue.js
my menu:

<select>
                  <option value="0">Select</option>
                  <option value="1">1</option>
                  <option value="2">2</option>
                  <option value="3">3</option>
                </select>

Answer 1

Here's a Vuetify component (created with all Google's material design specifications in mind)
https://vuetifyjs.com/en/components/selects#examples
UPD: more versatile select