/* hamburger variations */

.navbar-nav-row {
  display: flex;
  flex-direction: row; 
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;

  .nav-link {  
	color: rgba(0, 0, 0, 0.5);
  }
}

.navbar-toggler:focus,
.navbar-toggler:active {
    outline: 0;
}

.navbar-toggler span {
   display: block;
   background-color: #444;
   height: 3px;
   width: 25px;
   margin-top: 4px;
   margin-bottom: 4px;
   -webkit-transform: rotate(0deg);
   -moz-transform: rotate(0deg);
   -o-transform: rotate(0deg);
   transform: rotate(0deg);
   position: relative;
   left: 0;
   opacity: 1;
}

.navbar-toggler span:nth-child(1),
.navbar-toggler span:nth-child(3) {
   -webkit-transition: transform .35s ease-in-out;
   -moz-transition: transform .35s ease-in-out;
   -o-transition: transform .35s ease-in-out;
   transition: transform .35s ease-in-out;
}

.navbar-toggler:not(.collapsed) span:nth-child(1) {
    position: absolute;
    left: 12px;
    top: 10px;
    -webkit-transform: rotate(135deg);
    -moz-transform: rotate(135deg);
    -o-transform: rotate(135deg);
    transform: rotate(135deg);
    opacity: 0.9;
}

.navbar-toggler:not(.collapsed) span:nth-child(2) {
    height: 12px;
    visibility: hidden;
    background-color: transparent;
}

.navbar-toggler:not(.collapsed) span:nth-child(3) {
    position: absolute;
    left: 12px;
    top: 10px;
    -webkit-transform: rotate(-135deg);
    -moz-transform: rotate(-135deg);
    -o-transform: rotate(-135deg);
    transform: rotate(-135deg);
    opacity: 0.9;
}