Styling uneditable-input checkbox and textbox - css

Question

I'm making a login form within a table but I'm having a hard time formatting everything just the way I want to (never mind the left margin of the table, is just messed up on paint).
I want to make it look something like this:
However it currently looks like this:
The whole table is inside a div called "span54".
The checkbox "box" currently has 50px width (I want it like that), however this also affects the width of the textboxes.
How can I differentiate textboxes within that div?
The current CSS code:
checkbox (inspected checkox)
textbox (inspected textbox)
table code
<table class="logintable">
<tr>
<th colspan="2" rowspan="1">Login</th>
</tr>
<tr>
<td class="creds"><asp:label id="user" runat="server" text="User:" /></td>
<td colspan="1" rowspan="1"><input id="UserNameTextBox" type="text" runat="server" /></td>
<td colspan="1" rowspan="1"><asp:RequiredFieldValidator ID="vUserName" ControlToValidate="UserNameTextBox" Display="Static" ErrorMessage="Username Inválido" runat="server" /></td>
</tr>
<tr>
<td class="creds"><asp:label id="pass" runat="server" text="Password:" /></td>
<td colspan="1" rowspan="1"><input id="PasswordTextBox" type="password" runat="server" /></td>
<td colspan="1" rowspan="1"><asp:RequiredFieldValidator ID="vUserPass" ControlToValidate="PasswordTextBox" Display="Static" ErrorMessage="Password Inválida" runat="server" /></td>
</tr>
<tr>
<td colspan="3" rowspan="1"><asp:Button ID="btnlogin" runat="server" Text="Login" Class="btn-login" onclick="LoginButton_Click" /><asp:CheckBox id="RemPassword" cssclass="checkbox" runat="server" autopostback="false" text="Lembrar-me"/></td>
</tr>
<tr>
<td><asp:Label id="MsgLabel" runat="server" /></td>
</tr>
</table>

Answer 1

Edit file dq.css, near line 336 change width:50px; to width:160px;