div#burger_menu_icon {
  position: absolute;
  height: 100%;
  right: 10px;
  padding: 0 5px;
  background-color: #b3b3b3;
  cursor: pointer;
}

div#burger_menu_icon:hover {
  cursor: pointer;
}

div#dummy {
  width: 100%;
  height: 54px;
  background-color: #FFFFFF;
}

nav#nav_burger_menu {
  position: fixed;
  z-index: 30;
  top: 0;
  right: -250px;
  width: 250px;
  height: 100%;
  background-color: #ECEBF2;
  transition: .35s ease-in-out;
}
nav#nav_burger_menu li.burger_menu_item {
  position: relative;
  background-color: #FFFFFF;
  margin-bottom: 2px;
  min-height: 40px;
  line-height: 20px;
  padding: 10px 40px 10px 20px;
  cursor: pointer;
}
nav#nav_burger_menu li.burger_menu_item:after {
  content: '';
  background-image: url(/img/ic_arrow.png);
  background-repeat: no-repeat;
  background-size: contain;
  display: inline-block;
  position: absolute;
  right: 20px;
  top: 0;
  bottom: 0;
  margin: auto;
  width: 6px;
  height: 9px;
}
nav#nav_burger_menu li#burger_menu_item_1 {
  margin-top: 10px;
  margin-bottom: 10px;
  border-bottom: none;
}
nav#nav_burger_menu li.burger_menu_item:last-child {
  border-bottom: none;
}
nav#nav_burger_menu li#burger_menu_close {
  text-align: right;
  cursor: pointer;
}
nav#nav_burger_menu li#burger_menu_close i.fa-times {
  height: 40px;
  width: 40px;
  line-height: 40px;
  text-align: center;
  font-size: 30px;
  color: #666666;
  background-color: #b3b3b3;
}
nav#nav_burger_menu li.burger_menu_item:hover {
  cursor: pointer;
}
nav#nav_burger_menu i#btn_close:hover {
  cursor: pointer;
}

nav#nav_burger_menu.appear {
  -webkit-transform: translate3d(-250px, 0, 0);
  transform: translate3d(-250px, 0, 0);
}

div#bg_burger_menu {
  visibility: collapse;
  position: fixed;
  top: 0;
  z-index: 25;
  width: 100%;
  max-width: 1280px;
  height: 100%;
  margin: auto;
  background-color: rgba(0, 0, 0, 0.5);
}

div#bg_burger_menu.appear {
  visibility: visible;
  animation: show_menu_bg 0.5s linear 0s;
  cursor: pointer;
}

div#bg_burger_menu.disappear {
  animation: hide_menu_bg 0.5s linear 0s;
}

@keyframes show_menu_bg {
  from {
    opacity: 0;
    visibility: collapse;
  }
  to {
    opacity: 1;
    visibility: visible;
  }
}
@keyframes hide_menu_bg {
  from {
    opacity: 1;
    visibility: visible;
  }
  to {
    opacity: 0.5;
    visibility: collapse;
  }
}
@media screen and (min-width: 1280px) {
  nav#nav_burger_menu {
    right: -450px;
    width: 450px;
  }
  nav#nav_burger_menu li.burger_menu_item {
    padding: 20px 40px 20px 20px;
    margin-bottom: 5px;
  }
  nav#nav_burger_menu li.burger_menu_item:after {
    width: 9px;
    height: 14px;
  }

  nav#nav_burger_menu.appear {
    -webkit-transform: translate3d(-450px, 0, 0);
    transform: translate3d(-450px, 0, 0);
  }
}