.irrelevant{
    cursor: default; 
    display: block;
    font-size: 1em;
    -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 */
  }