.gf2-effect .mask {
position:absolute; /* Center the mask */
top:50px;
left:100px;
cursor:pointer;
border-radius: 50px;
border-width: 50px;
display: inline-block;
height: 100px;
width: 100px;
border: 50px solid rgba(0, 0, 0, 0.7);
-moz-box-sizing:border-box;
-webkit-box-sizing:border-box;
box-sizing:border-box;
opacity:1;
visibility:visible;
-moz-transform:scale(4);
-webkit-transform:scale(4);
-o-transform:scale(4);
-ms-transform:scale(4);
transform:scale(4);
-moz-transition:all 0.3s ease-in-out;
-webkit-transition:all 0.3s ease-in-out;
-o-transition:all 0.3s ease-in-out;
-ms-transition:all 0.3s ease-in-out;
transition:all 0.3s ease-in-out;
}
.gf2-effect:hover .mask {
   opacity: 0;
   border:0px solid rgba(0,0,0,0.7);
   visibility:hidden;
}