img {
    user-select:    none;
    -moz-user-select:   none;
    -ms-user-select:    none;
    -webkit-user-select:    none;
    -khtml-user-select: none;
    -webkit-user-drag:   none;
    -khtml-user-drag:    none;
    -webkit-touch-callout:   none;
}
video {
    user-select:    none;
    -moz-user-select:   none;
    -ms-user-select:    none;
    -webkit-user-select:    none;
    -khtml-user-select: none;
    -webkit-user-drag:   none;
    -khtml-user-drag:    none;
    -webkit-touch-callout:   none;
}