* {
  box-sizing: border-box;
   background-color: black;
   margin: 0;
   padding: 0;
   -webkit-tap-highlight-color: transparent;
   overflow: hidden;
   -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
                                  suppor
 }