#divBody {
    -webkit-user-select: none; /* webkit (safari, chrome) browsers */
    -moz-user-select: none; /* mozilla browsers */
    -khtml-user-select: none; /* webkit (konqueror) browsers */
    -ms-user-select: none; /* IE10+ */
}

/* ------------- NEW -------------- */
body {
    touch-action: none;
    background: transparent;
    overflow: hidden;
    -webkit-tap-highlight-color:rgba(0,0,0,0);
}

.btn-bg .item-top {
    opacity: 0;
}

.btn-bg:hover .item-background {
    opacity: 0;
}

.btn-bg:hover .item-top {
    opacity: 1;
}

.draggable-zone {
    opacity: 0.001;
}

.draggable-zone:focus { 
    outline:none !important;
}

.btn-pointer {
    cursor: pointer;
}