/**
 * バーガーボタン用スタイルシート
 */
#burgerBtn,
#burgerBtn span {
  /*display: inline-block;*/
  overflow:hidden;
  transition: all .4s;
  box-sizing: border-box;
	z-index:99;
}
#burgerBtn {
  position: absolute;
  right:0.5em;
  width: 2em;
  height: 2em;
}
/*
#burgerBtn.active {
	border:solid 1px #F00;
  width: 2em;
  height: 2em;
}
*/
#burgerBtn span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: #fff;
  border-radius: 1px;
}
#burgerBtn span:nth-of-type(1) {
  top: 10%;
}
#burgerBtn span:nth-of-type(2) {
  top: calc(50% - 1px);
}
#burgerBtn span:nth-of-type(3) {
  bottom: 10%;
}
#burgerBtn::after {
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  content: '';
  width: calc(2em - 4px);
  height: calc(2em - 4px);
  margin: -1em 0 0 -1em;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: all .75s;
}
#burgerBtn.active{
}
#burgerBtn.active span:nth-of-type(1) {
	width:calc(2em - 8px);
	top:0px;
	left:4px;
	-webkit-transform: translateY(calc(1em - 1px)) rotate(-45deg);
	transform: translateY(calc(1em - 1px)) rotate(-45deg);
}
#burgerBtn.active span:nth-of-type(2) {
	left: 60%;
	opacity: 0;
	-webkit-animation: active-menu-bar02 .8s forwards;
	animation: active-menu-bar02 .8s forwards;
}
@-webkit-keyframes active-menu-bar02 {
  100% {
    height: 0;
  }
}
@keyframes active-menu-bar02 {
  100% {
    height: 0;
  }
}
#burgerBtn.active span:nth-of-type(3) {
	width:calc(2em - 8px);
	bottom:0px;
	left:4px;
	-webkit-transform: translateY(calc(-1em + 1px)) rotate(45deg);
	transform: translateY(calc(-1em + 1px)) rotate(45deg);
}
#burgerBtn.active::after {
  -webkit-animation: circle .4s .25s forwards;
  animation: circle .4s .25s forwards;
}
@-webkit-keyframes circle {
  0% {
    border-color: transparent;
    -webkit-transform: rotate(0);
  }
  25% {
    border-color: transparent #fff transparent transparent;
  }
  50% {
    border-color: transparent #fff #fff transparent;
  }
  75% {
    border-color: transparent #fff #fff #fff;
  }
  100% {
    border-color: #fff;
    -webkit-transform: rotate(-680deg);
  }
}
@keyframes circle {
  0% {
    border-color: transparent;
    transform: rotate(0);
  }
  25% {
    border-color: transparent #fff transparent transparent;
  }
  50% {
    border-color: transparent #fff #fff transparent;
  }
  75% {
    border-color: transparent #fff #fff #fff;
  }
  100% {
    border-color: #fff;
    transform: rotate(-680deg);
  }
}