nav {
  background-color: rgba(0, 0, 0, .6);
  display: flex;
  flex-flow: row wrap;
  justify-content: flex-start;
  align-content: flex-start;
  padding-top: 10px;
  overflow-y: auto;
}

nav::-webkit-scrollbar {
    width: 10px;
    background-color: grey;
}
 
nav::-webkit-scrollbar-track {
    -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3); 
    border-radius: 10px;
}
 
nav::-webkit-scrollbar-thumb {
    border-radius: 10px;
    -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.5); 
}

nav > a {
  display: block;
  width: 90px;
  flex: 0 1 auto;
  text-decoration: none;
  text-align: center;
  margin-bottom: 5px;
}

nav > a > span  {
  color: transparent;
  text-transform: uppercase;
  font-size: 70%;
  transition: color 1s;
}

nav > a > svg {
  width: 40px;
  height: 40px;
  margin: 0 20px;
  fill: #ffffff;  
}

nav > a:hover svg {
  filter: brightness(60%);
}

nav > a:hover span {
  filter: brightness(60%);
}

nav:hover span{
  color: white;
}

nav:hover .icon_home {
  fill: #7d3c98;
}

nav:hover .icon_calendar {
  fill: #cb4335;
}

nav:hover .icon_design {
  fill: #2e86c1;
}

nav:hover .icon_employment {
  fill: #138d75;
}

nav:hover .icon_form {
  fill: #28B463;
}

nav:hover .icon_locations {
  fill: #d68910;
}

nav:hover .icon_services {
  fill: #ba4a00;
}

nav:hover .icon_staff {
  fill: #D60D25;
}

nav:hover .icon_newsletter {
  fill: #f4d03f;
}

nav:hover .icon_referrals {
  fill: #5DADE2;
}

nav:hover .icon_handbook {
  fill: #c39bd3;
}

.nav_fb {
  display: none;
}

.sticky_nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100px;
  height: 100%;
}