Check out example codes for "html form elements". It will help you in understanding the concepts better.
Code Example 1
<input>
<label>
<select>
<textarea>
<button>
<fieldset>
<legend>
<datalist>
<output>
<option>
<optgroup>
Code Example 2
<!-- 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>
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