body.open, body:after {
  overflow: hidden;
}

.b-nav, body:after {
  position: absolute;
}

.b-brand, .b-link {
  font-family: Helvetica-Neue,Helvetica,Arial,sans-serif;
  font-size: 24px;
  font-weight: 300;
  margin-left: 30px;
  text-decoration: none;
}

@keyframes slideInLeft {
}

@keyframes slideOutLeft {
}

* {
  box-sizing: border-box;
}

body:after {
  /*background: #2196f3;*/
  content: '';
  height: 100%;
  left: 0;
  opacity: 0;
  padding: 0;
  top: 0;
  visibility: hidden;
  -webkit-transition: all .4s ease;
  transition: all .4s ease;
  width: 100%;
}

body.open:after {
  opacity: 1;
  visibility: visible;
}

.b-nav {
  z-index: 11;
}

.b-nav:not(.open) {
  visibility: hidden;
}

.b-nav li {
  color: #fff;
  list-style-type: none;
  padding: 10px;
  text-align: left;
  -webkit-transform: translateX(-250px);
  -ms-transform: translateX(-250px);
  transform: translateX(-250px);
}

.b-nav li:not(.open) {
  animation-duration: .4s;
  animation-fill-mode: both;
  -webkit-animation-name: slideOutLeft;
  animation-name: slideOutLeft;
}

.b-nav li:not(.open), .b-nav.open li {
  -webkit-animation-duration: .4s;
  -webkit-animation-fill-mode: both;
}

.b-nav li:first-child {
  padding-top: 120px;
}

.b-nav.open {
  visibility: visible;
}

.b-nav.open li {
  animation-duration: .4s;
  animation-fill-mode: both;
  -webkit-animation-name: slideInLeft;
  animation-name: slideInLeft;
}

.b-link {
  background: 0 0;
  border-left: rgba(255,255,255,0)solid 2px;
  color: #fff;
  transition: all .4s ease;
  width: auto;
}

.b-link, .b-menu {
  -webkit-transition: all .4s ease;
}

.b-link--active, .b-link:hover {
  border-left: #fff solid 2px;
  padding-left: 30px;
}

.b-menu {
  background: #f49958;
  border: 2px solid #985322;
  border-radius: 50%;
  cursor: pointer;
  display: inline-block;
  height: 60px;
  padding-left: 15.5px;
  padding-top: 17.5px;
  position: relative;
  transition: all .4s ease;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  width: 60px;
  z-index: 12;
}

.b-bun--bottom, .b-bun--mid, .b-bun--top {
  height: 2px;
  width: 25px;
}

.b-container.open .b-main, .b-menu:hover {
  border: 2px solid #fff;
}

.b-bun {
  background: #fff;
  transition: all .4s ease;
}

.b-brand, .b-bun {
  position: relative;
  -webkit-transition: all .4s ease;
}

.b-bun--top {
  top: 0;
}

.b-bun--mid {
  top: 8px;
}

.b-bun--bottom {
  top: 16px;
}

.b-brand {
  color: #2196f3;
  top: -21.43px;
  transition: all .4s ease;
  z-index: 13;
}

.b-container {
  height: 60px;
  left: 30px;
  position: absolute;
  top: 30px;
}

.b-container:hover:not(.open) .bun-bottom, .b-container:hover:not(.open) .bun-mid, .b-container:hover:not(.open) .bun-top {
  background: #2196f3;
}

.b-container.open .b-bun--top {
  background: #fff;
  top: 9px;
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}

.b-container.open .b-bun--mid {
  opacity: 0;
}

.b-container.open .b-bun--bottom {
  background: #fff;
  top: 5px;
  -webkit-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

.b-container.open .b-brand {
  color: #fff;
}