body.loading
{
    cursor:wait;
}

body.loading > *
{
    opacity:0.5;
}

body.loading:after
{
    width:32px;
    height:32px;
    content:"\f110";
    font-family:"FontAwesome";
    position:fixed;
    top:calc(50% - 16px);
    left:calc(50% - 16px);
    text-align:center;
    font-size:32px;
    pointer-events:none;
    -webkit-animation:spin 1s infinite linear;
    animation:spin 1s infinite linear;
    z-index:1;
}