.navbar-toggler {
  width: 20px;
  height: 20px;
  position: relative;
  transition: .5s ease-in-out;
}

.navbar-toggler,
.navbar-toggler:focus,
.navbar-toggler:active,
.navbar-toggler-icon:focus {
  outline: none;
  box-shadow: none;
  border: 0;
}

.navbar-toggler span {
  margin: 0;
  padding: 0;
}

.toggler-icon {
  display: block;
  position: absolute;
  height: 2px;
  width: 100%;
  background: #FFF;
  border-radius: 1px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: .25s ease-in-out;
}

.middle-bar {
  margin-top: 0px;
}

/* when navigation is clicked */

.navbar-toggler .top-bar {
  margin-top: 0px;
  transform: rotate(135deg);
}
.navbar-toggler .middle-bar {
  opacity: 0;
  filter: alpha(opacity=0);
}
.navbar-toggler .bottom-bar {
  margin-top: 0px;
  transform: rotate(-135deg);
}
/* State when the navbar is collapsed */
.navbar-toggler.collapsed .top-bar {
  margin-top: -20px;
  transform: rotate(0deg);
}
.navbar-toggler.collapsed .middle-bar {
  opacity: 1;
  filter: alpha(opacity=100);
}
.navbar-toggler.collapsed .bottom-bar {
  margin-top: 20px;
  transform: rotate(0deg);
}
/* Color of 3 lines */
.navbar-toggler.collapsed .toggler-icon {
  background: #FFF;
}
.nav-blanco .navbar-dark .navbar-toggler .toggler-icon {
  background: #002071;
}
.nav-blanco .navbar-dark .navbar-toggler.collapsed .toggler-icon {
  background: #002071;
}