@font-face {
  font-family: Pacifico;
  src:url(Pacifico.ttf);
}
html{
  font-size: 100px;
  font-family: Arial,sans-serif;
  background: #333;
  text-align: center;
}

.page{
  position: fixed;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.neon-area{
  display: flex;
  justify-content: center;
  align-items: center;
  flex-grow: 1;
  background: #111;
}
.neon{
  font-family: "Pacifico",sans-serif;
  width: 6rem;
  height: 2.5rem;
  position: relative;
}
.neon::before,.animation{
  width:5rem;
  height: 1.5rem;
  position: absolute;
  top:50%;
  left:50%;
  transform: translate(-50%,-50%);
  border-top-left-radius: 1.8rem 1.5rem;
  border-top-right-radius: 4.5rem 1.5rem;
  border-bottom-left-radius: .3rem;
  border-bottom-right-radius: .3rem;
}
.neon::before{
  content:"";
  display: block;
  box-shadow: none;
  transition: box-shadow .5s 1s;
}
.neon.on::before{
  box-shadow:
    0 0 10px 10px rgba(255,0,0,.1),
    0 0 12px 15px rgba(235,0,0,.1),
    0 0 16px 20px rgba(220,0,0,.1),
    0 0 20px 25px rgba(200,0,0,.1),
    0 0 25px 30px rgba(180,0,0,.1),
    0 0 30px 35px rgba(160,0,0,.1),
    0 0 36px 40px rgba(120,0,0,.1),
    0 0 40px 50px rgba(100,0,0,.1),
    0 0 50px 70px rgba(60,0,0,.1),
    0 0 10px 10px rgba(255,0,0,.1) inset,
    0 0 12px 15px rgba(235,0,0,.1) inset,
    0 0 16px 20px rgba(220,0,0,.1) inset,
    0 0 20px 25px rgba(200,0,0,.1) inset,
    0 0 25px 30px rgba(180,0,0,.1) inset,
    0 0 30px 35px rgba(160,0,0,.1) inset,
    0 0 36px 40px rgba(120,0,0,.1) inset,
    0 0 40px 50px rgba(100,0,0,.1) inset,
    0 0 50px 70px rgba(60,0,0,.1) inset;
    transition: box-shadow .5s 1s;
    animation:blink-d 0.1s ease-in-out infinite 1s;
}
.animation{
  box-shadow:
    0 0 2px 4px rgba(155,100,100,0.1),
    0 -2px 2px 3px rgba(155,100,100,0.1) inset,
    0 0 2px 10px rgba(255,100,100,0.1),
    0 0 2px 7px rgba(255,100,100,0.1) inset,
    0 0 12px 13px rgba(100,0,0,0.1),
    0 0 12px 11px rgba(100,0,0,0.1) inset,
    0 15px 30px 18px rgba(0,0,0,1),
    0 20px 25px 12px rgba(0,0,0,1) inset;
  transition: box-shadow .5s 1s;
}
.neon.on .animation{
  box-shadow:
    0 0 2px 4px rgba(255,200,200,0.5),
    0 -2px 2px 3px rgba(255,200,200,0.5) inset,
    0 0 2px 10px rgba(255,100,100,0.9),
    0 0 2px 7px rgba(255,100,100,1) inset,
    0 0 12px 13px rgba(255,0,0,0.9),
    0 0 12px 11px rgba(255,0,0,0.7) inset,
    0 15px 30px 18px rgba(0,0,0,.9),
    0 20px 25px 12px rgba(0,0,0,.9) inset;
  transition: box-shadow .5s 1s;
}

.text{
  position: absolute;
  top:50%;
  left:50%;
  transform: translate(-50%,-40%) rotate(5deg);
  font-size: 0;
  white-space: nowrap;
  color:#3a3720;
  text-shadow:
    0 2px 2px rgba(30,30,30,.4),
    0 1px 0 rgba(30,30,30,.2),
    0 15px 38px black,
    0 15px 10px black,
    0 5px 12px black;
  transition: text-shadow .5s .5s,color .5s .5s;
}
.neon.on .text{
  color:rgba(50, 231, 255, 0.9);
  text-shadow:
    0 3px 10px rgba(0,0,0,.6),
    0 2px 8px rgba(0,0,0,.7),
    0 1px 6px rgba(0,0,0,.8),
    0 0 2px rgba(0,0,0,.8),
    0 0 5px rgba(255,200,0,1),
    0 0 28px rgba(255,50,0,0.9),
    0 15px 38px black,
    0 15px 10px black,
    0 5px 12px black,
    0 0 60px rgba(226,221,0,0.5),
    0 0 30px rgba(185,245,7,0.7);
  transition: text-shadow .5s .5s,color .5s .5s;
}
.text>span{
  font-size: .8rem;
}
.text>span:nth-child(1){
  font-size: 1rem;
}
.neon.on .blink-1{
  animation:blink-a 0.01s infinite;
}
.neon.on .blink-2{
  animation:blink-b 7s infinite;
}
.neon.on .blink-3{
  animation:blink-b 2s infinite;
}
.neon.on .blink-4{
  animation:blink-c 5s infinite;
}

@keyframes blink-a{
  50%{
    color:#3a3720;
    text-shadow:
      0 15px 38px black,
      0 15px 10px black,
      0 5px 12px black;
    }
}
@keyframes blink-b {
  50%,52%,54%,56%,58%,60%{
    color:inherit;
    text-shadow: inherit;
  }
  51%,53%,55%,57%,59%{
    color:#3a3720;
    text-shadow:
      0 15px 38px black,
      0 15px 10px black,
      0 5px 12px black;
  }
}
@keyframes blink-c{
  0%,2%,40%,42%,44%{
    color:#3a3720;
    text-shadow:
      0 15px 38px black,
      0 15px 10px black,
      0 5px 12px black;
  }
  1%,41%,43%,45%,100%{
    color:inherit;
    text-shadow: inherit;
  }
}

@keyframes blink-d {
  50%{
    box-shadow:
      0 0 10px 10px rgba(255,0,0,.05),
      0 0 10px 15px rgba(235,0,0,.05),
      0 0 10px 20px rgba(220,0,0,.05),
      0 0 10px 25px rgba(200,0,0,.05),
      0 0 10px 30px rgba(180,0,0,.05),
      0 0 10px 35px rgba(160,0,0,.05),
      0 0 10px 40px rgba(120,0,0,.05),
      0 0 10px 50px rgba(100,0,0,.05),
      0 0 10px 70px rgba(60,0,0,.05),
      0 0 10px 10px rgba(255,0,0,.05) inset,
      0 0 10px 15px rgba(235,0,0,.05) inset,
      0 0 10px 20px rgba(220,0,0,.05) inset,
      0 0 10px 25px rgba(200,0,0,.05) inset,
      0 0 10px 30px rgba(180,0,0,.05) inset,
      0 0 10px 35px rgba(160,0,0,.05) inset,
      0 0 10px 40px rgba(120,0,0,.05) inset,
      0 0 10px 50px rgba(100,0,0,.05) inset,
      0 0 10px 70px rgba(60,0,0,.05) inset;
  }
}

.switch-area{
  height: 2em;
  display: flex;
  align-items: center;
  background: silver;
}
.switch{
  font-size: 1rem;
  display: block;
  position: relative;
  margin:2rem auto;
  width:3rem;
  height: 1.5rem;
  border-radius:1rem;
  background:
    linear-gradient(
      to bottom,
      hsla(0, 0%, 40%, 1),
      hsla(0, 0%, 95%, 1));
  box-shadow: 0 -2px white inset,0 2px gray inset;
}
.switch>input{
  display: none;
}
.switch:before,.switch:after,.switch>.slider::before,.switch>.slider::after{
  content:"";
}
.switch:before,
.switch:after,
.switch>.slider,
.switch>.slider::before,
.switch>.slider::after,
.center{
  display: block;
  position: absolute;
  left:50%;
  top:50%;
  transform: translate(-50%,-50%);
}
.switch:before{
  width:2.4rem;
  height: 1rem;
  border-radius: .5rem;
  background: linear-gradient(to bottom,#464343 20%,#f4eeee 100%);
}
.switch:after{
  width:2.36rem;
  height:.96rem;
  border-radius: .49rem;
  box-shadow: 0 3px 20px hsla(0,0%,0%,1) inset;
}
.switch>.slider{
  width:0;
  height:0;
  left:.7rem;
  z-index: 2;
  transition: left .5s;
}
.switch>input:checked~.slider{
  left:2.2rem;
  transition: left .5s;
}
.switch>.slider::before{
  width:1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background:linear-gradient(to top, #9e9e9e 20%, #f4f4f4);
  box-shadow: 0 2px 10px black;
}
.switch>.slider::after{
  width:.9rem;
  height: .9rem;
  border-radius: 50%;
  background: #d5d4d4;
}

.center{
  width:2.36rem;
  height:.96rem;
  border-radius: .48rem;
  overflow: hidden;
  box-shadow:
    0 1px 30px hsla(0,0%,0%,1) inset,
    0 2px 10px 2px hsla(0,0%,0%,1) inset;
}
.center::before,.center::after{
  box-sizing: border-box;
  display: block;
  position: absolute;
  top:50%;
  transform:translateY(-50%);
  width:calc(100% - .4rem);
  height:100%;
  line-height: .9rem;
  font-size: .3rem;
  font-weight: bold;
}
.center::before{
    content:"open";
   text-align: center;
    background: rgb(247, 123, 47);
    border-top-left-radius: .45rem;
    border-bottom-left-radius: .45rem;
    left:-1.48rem;
    color:rgba(0,255,0,.5);
    text-shadow:none;
    transition: left .5s,color .5s,text-shadow .5s;
}
.center::after{
    content:"off";
    background: gray;
    text-align: right;
    border-top-right-radius: .45rem;
    border-bottom-right-radius: .45rem;
    padding-right: 25%;
    left:.48rem;
    color:rgba(255,0,0,.8);
    text-shadow:
      0px 0px 1px hsla(0,0%,50%,.3),
      0 0 15px rgba(255,0,0,.8),
      0 0 20px rgba(255,0,0,1);
    transition: left .5s,color .5s .5s,text-shadow .5s .5s;
}
.switch>input:checked ~.center::before{
  left:-20px;
  color:rgba(0,255,0,1);
  text-shadow:
    0px 0px 2px hsla(0,0%,50%,.3),
    0 0 15px rgba(0,255,0,.8),
    0 0 20px rgba(0,255,0,1);
  transition: left .5s,color .5s .5s,text-shadow .5s .5s;
}
.switch>input:checked ~.center::after{
  left:1.96rem;
  color:rgba(255,0,0,.3);
  text-shadow: none;
  transition: left .5s,color .5s,text-shadow .5s;
}