problem in showing Lable in firefox browser

hi 

I have label that I bind it from database

<div id="Dlbladd">
                            <asp:Label ID="lbladdress" runat="server" Text="Label" CssClass="Address"></asp:Label>
                       
</div>

below is CSS

.Address
                                     
 {
     float:right; 
      font:12.5px Tahoma;
      direction:rtl;
       height:30px;  
      width:150px;
      text-align:right;
                                         
 }



      #Dlbladd
        {
            width:170px;
            height:35px;
            direction:rtl;
             float:right;
            margin-right:20px;
         
  }

I want it show text in 2 line, in chrome it show correctly like below

but in firefox it show text in 3 line like below

what should I do?

Best Regards

Neda