/* mobile size */
@media screen and (max-width: 489px) {

  .links {
    
    display: none;
    
    }
    
    .hamburger-menu {
      display: flex;
    }
     /* hamburger menu */
#menu__toggle {
   
   opacity: 0;
 }
 
 #menu__toggle:checked ~ .menu__btn > span {
   transform: rotate(45deg);
 }
 #menu__toggle:checked ~ .menu__btn > span::before {
   top: 0;
   transform: rotate(0);
 }
 #menu__toggle:checked ~ .menu__btn > span::after {
   top: 0;
   transform: rotate(90deg);
 }
 #menu__toggle:checked ~ .menu__box {
   visibility: visible;
   left: 0;
 }
 
 .menu__btn {
   visibility: visible;
   display: flex;
   align-items: center;
   position: absolute;
   top: 20px;
   right: 20px;
 
   width: 26px;
   height: 26px;
 
   cursor: pointer;
   z-index: 1;
 }
 
 .menu__btn > span,
 .menu__btn > span::before,
 .menu__btn > span::after {
   display: block;
   position: absolute;
 
   width: 100%;
   height: 2px;
 
   background-color: #616161;
 
   transition-duration: .25s;
 }
 .menu__btn > span::before {
   content: '';
   top: -8px;
 }
 .menu__btn > span::after {
   content: '';
   top: 8px;
 }
 
 .menu__box {
   visibility: visible;
   display: block;
   position: fixed;
   visibility: hidden;
   top: 0;
   left: -100%;
 
   width: 300px;
   height: 100%;
 
   margin: 0;
   padding: 80px 0;
 
   list-style: none;
 
   background-color: #ECEFF1;
   box-shadow: 1px 0px 6px rgba(0, 0, 0, .2);
 
   transition-duration: .25s;
 }
 
 .menu__item {
   visibility: visible;
   display: block;
   padding: 12px 24px;
 
   color: #333;
 
   font-family: 'Roboto', sans-serif;
   font-size: 20px;
   font-weight: 600;
 
   text-decoration: none;
 
   transition-duration: .25s;
 }
 .menu__item:hover {
   background-color: #CFD8DC;
 }

   .form-section h1 {
       text-align: center;
   }


}