@media (max-width: 920px) {
  #main-nav li {
      width: 20%;
      margin-left: 0px;
      margin-right: 0px;
      padding-bottom: 10px;
      text-align: center;
  }
  #main-nav ul {
      margin: -50px -25px;
      padding: 65px 10px 15px;
  }
  #main-nav ul {
      display:none !important;
  }
}
@media (max-width: 768px) {
  #main-nav li {
      width: 100%;
  }
}
@media (min-width: 768px) {
#header {
		position: fixed;
		background-color: #b5adc0;
  	padding:20px;
	}
}