Wordpress Text Block deletes form inputs - html

Question

I'm trying to edit a Wordpress website adding a form. I'm adding this form into a text block writing it in pure html. The thing is when I go to the preview Wordpress deleted the input tags.
I tried looking for someone with the same problem, but I haven't found nothing yet.
Why is this happening?
Here is the code I'm adding into the textblock. The input tags disappear.
Thanks!
<form id="form1" name="form1" method="post" action="http://test.cl/bridge.php">
<table cellspacing="0" style="width:100%">
<tbody>
<tr>
<td style="width:30%; text-align:center; border: 0px solid #ffffff;">
User:
</td>
<td style="width:70%; text-align:center; border: 0px solid #ffffff;">
<input name="nombre" type="text" id="inputNombre" placeholder="User" style="width:90%">
</td>
</tr>
<tr>
<td style="width:30%; text-align:center; border: 0px solid #ffffff;">
Password:
</td>
<td style="width:70%; text-align:center; border: 0px solid #ffffff;">
<input name="pass" type="password" id="inputPass" placeholder="Password" style="width:90%">
</td>
</tr>
<tr>
<td colspan="2" style="border: 0px solid #ffffff;">
<br />
</td>
</tr>
<tr>
<td colspan="2" style="text-align:center; border: 0px solid #ffffff;">
<input type="submit" name="Submit" value="Login" style="border: none !important; width:170px; padding:4px ; font-size:14px; font-weight:bold; background-color: #0CF; color:#069; border-radius:20px;">
</td>
</tr>
<td colspan="2" style="border: 0px solid #ffffff;">
<br />
</td>
<tr>
<td colspan="2" style="text-align:center; border: 0px solid #ffffff;">
<a href="http://test.cl/index.php">
Forgot your password?
</a>
</td>
</tr>
</tbody>
</table>
</form>