Items in combo box is displaying in next row

[RK]

Items in combo box is displaying in next line.
Attached snapshot for your reference.

[Shinu]

Hi PRABAKAR,

Please have a look into the following code snippet which works fine at my end.

ASPX:

<telerik:RadComboBox ID="RadComboBox1" runat="server" CheckBoxes="true" EnableCheckAllItemsCheckBox="true">
    <Localization CheckAllString="All" />
    <Items>
        <telerik:RadComboBoxItem Text="Item1" />
        <telerik:RadComboBoxItem Text="Item2" />
        <telerik:RadComboBoxItem Text="Item3" />
        <telerik:RadComboBoxItem Text="Item4" />
    </Items>
</telerik:RadComboBox>

Please provide your code if it doesn't help.
Thanks,
Shinu.