.wait{
    background: rgba(0, 0, 0, 0.1);
    position: absolute;
    top: 0px;
    right: 0px;
    width: 100%;
    height: 100%;
    z-index:100;
    text-align: center;
}
.wait i{
    position: relative;
    top: 50%;
}

form .controls{
     position: relative;
}