.nav-hidden {
  display: none;
}

.menuOpen {
  overflow: hidden;
}

#menubtn {
  display: block;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.33);
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 99999;
  border-radius: 8px;
  cursor: pointer;
}

#menubtn span {
  display: block;
  width: 32px;
  height: 2px;
  border-radius: 1px;
  background: #666;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%) rotate(0deg);
          transform: translate(-50%, -50%) rotate(0deg);
  -webkit-transition: 0.6s;
  transition: 0.6s;
}

#menubtn span.top {
  top: 30%;
}

#menubtn span.mid {
  opacity: 1;
}

#menubtn span.btm {
  top: 70%;
}

.menuOpen #menubtn .top {
  top: 50%;
  -webkit-transform: translate(-50%, -50%) rotate(405deg);
          transform: translate(-50%, -50%) rotate(405deg);
}

.menuOpen #menubtn .mid {
  -webkit-transform: translate(-50%, -50%) rotate(720deg);
          transform: translate(-50%, -50%) rotate(720deg);
  opacity: 0;
}

.menuOpen #menubtn .btm {
  top: 50%;
  -webkit-transform: translate(-50%, -50%) rotate(-405deg);
          transform: translate(-50%, -50%) rotate(-405deg);
}

.menuOpen .menuBg {
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99997;
}

nav {
  background: #FFE5EB;
  position: fixed;
  z-index: 99998;
  top: 0;
  right: -320px;
  -webkit-transition: 0.3s;
  transition: 0.3s;
  -webkit-transition-delay: 0.1s;
          transition-delay: 0.1s;
  height: 100%;
  padding: 32px;
  padding-top: 64px;
  max-width: 320px;
  width: 100%;
  overflow-y: auto;
}

nav .menu {
  text-align: center;
}

nav .menu li + li {
  margin-top: 8px;
}

nav .menu a {
  color: #666;
  font-size: 1.8rem;
  font-weight: bold;
}

nav .sns {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -webkit-flex-flow: row wrap;
      -ms-flex-flow: row wrap;
          flex-flow: row wrap;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  margin-top: 32px;
}

nav .sns li {
  width: 56px;
  padding: 0 8px;
}

nav .logo {
  margin-top: 32px;
  text-align: center;
}

nav .logo a {
  display: block;
  width: 142px;
  margin: 0 auto;
}

nav .spLink {
  margin-top: 32px;
  text-align: center;
}

nav .spLink li + li {
  margin-top: 8px;
}

nav .spLink a {
  color: #666;
}

.menuOpen nav {
  right: 0;
}