styles.css

body {
  overflow: hidden;
}

.App {
  font-family: sans-serif;
  text-align: center;
}

.menu-button--full { 
   top: 40px; 
   left: 20px; 
 }
 .menu-button { 
   z-index: 40; 
   border: none; 
   position: fixed; 
   top: 40px; 
   right: 20px; 
   padding: 12px; 
   font-size: 1em; 
   background: none; 
   background: #fff; 
   color: #692969; 
   transition: background 0.1s linear; 
   cursor: pointer; 
}
    
.menu-button:hover,
.menu-button:focus { 
  background: #e8daff; 
}