جعل التوقيع فى اطار محدد

.signature_div {
-moz-border-radius-bottomleft:8px;
-moz-border-radius-bottomright:8px;
-moz-border-radius-topleft:8px;
-moz-border-radius-topright:8px;
border:2px solid #000000;
background:
url(http://i68.servimg.com/u/f68/14/58/09/35/signat11.gif);
background-color: #F0FFF0 ;
background-position:top;
background-repeat: no-repeat;
display: block;
overflow: auto;
padding:15px;);
}