add select box with input box 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: input and select box combined
<input type="text" list="cars" />
<datalist id="cars">
<option>Volvo</option>
<option>Saab</option>
<option>Mercedes</option>
<option>Audi</option>
</datalist>