dropdown box as input html code example

Example 1: html form select

<!-- O segundo valor estará selecionado inicialmente -->
<select name="select">
  <option value="valor1">Valor 1</option> 
  <option value="valor2" selected>Valor 2</option>
  <option value="valor3">Valor 3</option>
</select>

Example 2: number dropdown html

<select id="selectNumber">
  <option value="1">One</option>
  <option value="2">Two</option>
  <option value="3">Three</option>
</select>