ui.scss

// don't allow highlting on double click
*:not(.allow-select) {
  -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari */
     -khtml-user-select: none; /* Konqueror HTML */
       -moz-user-select: none; /* Firefox */
        -ms-user-select: none; /* Internet Explorer/Edge */
            user-select: none; /* Non-prefixed version, currently
                                  supported by Chrome and Opera */
}

// don't allow drag
* {
  -webkit-user-drag: none;
          user-drag: none;
}

// makes sure that no outline gets left after clicking buttons
*:focus {
    outline: 0 !important;
}

// use proper pointer (hand) instead of default (arrow)
body {
  cursor: default;
}