body {
  /*---------------------------------
	    +1024  	- desktop
	1023-769 	- tablet landscape
	768 -481 	- tablet 
	480-     	- phone landscape & smaller
    -----------------------------------*/
}
body header .menu-bars {
  display: none;
  margin: 2px;
  padding: 0;
  cursor: pointer;
}
body header .menu-bars div {
  width: 29px;
  height: 5px;
  background-color: #333;
  margin: 4px 0;
  transition: 0s;
}
body header .menu-bars.change div {
  background-color: #999;
}
@media (max-width: 768px) {
  body nav {
    display: none;
  }
  body nav.open {
    display: unset;
  }
  body header .menu-bars {
    display: inline-block;
  }
  body main {
    left: 0;
  }
}