pop up ask part 1

.popup_block{
border:10px solid #000;
border-radius:5px;
display: none;
background: #fff; /*background color is #fff*/
padding-top: 20px;
padding-bottom: 20px;
padding-left: 40px;
padding-right: 40px;
float: left;
position: fixed;
top: 50%;
left: 50%;
z-index: 9999999999999999999999999999999999999999;
}
img.btn_close {/*the close button*/
background-color:#fff;
padding:1px;
float: right;
margin-top:-20px;
margin-bottom:-20px;
margin-right:0px;left:20px;
}
*html #fade {
position: absolute;
}
*html .popup_block {
position: absolute;
}
#fade {
background-color:#000;
display: none; /*--hidden by default--*/
position: fixed; left: 0; top: 0; width: 100%; height: 100%;
opacity: .6;
z-index: 9999;

}