.hidden {
    display: none !important;
}

.no-select {
    -webkit-touch-callout: none;    /* iOS Safari */
    -webkit-user-select: none;      /* Safari */
    -khtml-user-select: none;       /* Konqueror HTML */
    -moz-user-select: none;         /* Old versions of Firefox */
    -ms-user-select: none;          /* Internet Explorer/Edge */
    user-select: none;              /* Non-prefixed version, currently supported by Chrome, Edge, Opera and Firefox */
}