.rsdn_button_sticky{
position: fixed;
  bottom: 50%;
  right: 0px;
border:1px solid #25729a; -webkit-border-radius: 5px; -moz-border-radius: 5px;border-radius: 5px; font-size:17px;font-family:arial, helvetica, sans-serif; padding: 8px 8px 8px 8px; text-decoration:none; display:inline-block; color: #FFFFFF;
 background-color: #3093c7; background-image: -webkit-gradient(linear, left top, left bottom, from(#3093c7), to(#1c5a85));
 background-image: -webkit-linear-gradient(top, #3093c7, #1c5a85);
 background-image: -moz-linear-gradient(top, #3093c7, #1c5a85);
 background-image: -ms-linear-gradient(top, #3093c7, #1c5a85);
 background-image: -o-linear-gradient(top, #3093c7, #1c5a85);
 background-image: linear-gradient(to bottom, #3093c7, #1c5a85);filter:progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr=#3093c7, endColorstr=#1c5a85);
 
 margin-right: -2em;
vertical-align: middle;
-webkit-transform: rotate(270deg);
-moz-transform: rotate(90deg);
-o-transform: rotate(90deg);
-ms-transform: rotate(90deg);
transform: rotate(90deg);
}

.rsdn_button_sticky:hover{
 border:px solid #FFFFFF;
 background-color: #26759e; background-image: -webkit-gradient(linear, left top, left bottom, from(#26759e), to(#133d5b));
 background-image: -webkit-linear-gradient(top, #26759e, #133d5b);
 background-image: -moz-linear-gradient(top, #26759e, #133d5b);
 background-image: -ms-linear-gradient(top, #26759e, #133d5b);
 background-image: -o-linear-gradient(top, #26759e, #133d5b);
 background-image: linear-gradient(to bottom, #26759e, #133d5b);filter:progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr=#26759e, endColorstr=#133d5b);
 color: white;
}