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HTML 

              
                .sw
  .so
  .vhr
  .so
.g
  - 2.times do
    .p
  .b
.s 
  Start
  .in Hover the bar on the bottom left for settings.
.sb
  %p 0
  %p 0
.op
  .st Announcer
  .st Sound
  .st Reset
  .st CodePen Ball
%audio{src: "https://s3-us-west-2.amazonaws.com/s.cdpn.io/455279/bounce.wav", type: "audio/wav", class: "bounce"}
%audio{src: "https://s3-us-west-2.amazonaws.com/s.cdpn.io/455279/pattle.wav", type: "audio/wav", class: "pattle"}
%audio{src: "https://s3-us-west-2.amazonaws.com/s.cdpn.io/455279/ply1.mp3", type: "audio/mp3", class: "ply1s"}
%audio{src: "https://s3-us-west-2.amazonaws.com/s.cdpn.io/455279/ply2.mp3", type: "audio/mp3", class: "ply2s"}
!

CSS 

              
                @import url('https://fonts.googleapis.com/css?family=Press+Start+2P')
html
  background-color: black
  user-select: none
  body
    margin: 0
    overflow: hidden

.sw
  display: flex
  position: absolute
  top: 0
  left: 0
  height: 100%
  width: 100%
  z-index: 1
  .so
    top: 0
    left: 0
    width: 50%
    height: 100%
  .vhr
    height: 100%
    width: 1px
    background-color: rgba(255,255,255,0.1)
.g
  .p
    height: 21vh
    width: 8px
    position: absolute
    border-radius: 90px
    &:nth-child(1)
      background-color: #00ccff
      -webkit-animation-name: rainbow-bg
      -webkit-animation-duration: 4s
      -webkit-animation-iteration-count: infinite
    &:nth-child(2)
      background-color: #00ff00
      -webkit-animation-name: rainbow-bg
      -webkit-animation-duration: 6s
      -webkit-animation-iteration-count: infinite
  .b
    display: none
    height: 1.3vh
    width: 1.3vh
    position: absolute
    border-radius: 90px
    -webkit-animation-name: rainbow-bg
    -webkit-animation-duration: 4s
    -webkit-animation-iteration-count: infinite
    
.s
  padding: 2vh 3vh 2vh 3vh
  font-family: "Press Start 2P"
  font-size: 6vh
  text-align: center
  color: lime
  position: absolute
  top: 50%
  left: 50%
  transform: translate(-50%, -50%)
  transition: font-size 0.2s
  cursor: pointer
  -webkit-animation-name: rainbow-txt
  -webkit-animation-duration: 2s
  -webkit-animation-iteration-count: infinite
  z-index: 2
  &:hover
    transition: font-size 0.2s
    font-size: 5vh
  .in
    margin: 2vh auto 0 auto
    width: 25vh
    font-size: 1vh
    line-height: 2vh
  
.sb
  position: absolute
  left: 50%
  bottom: 1vh
  width: 15vh
  transform: translateX(-50%)
  padding: 2vh
  display: flex
  justify-content: space-between
  p
    color: black
    font-size: 3vh
    margin-top: 0
    margin-bottom: 0
    font-family: "Press Start 2P"
    -webkit-animation-name: rainbow-txt
    -webkit-animation-duration: 4s
    -webkit-animation-iteration-count: infinite
    
.op
  height: 11vh
  width: 20vh
  position: absolute
  bottom: -15vh
  left: 0
  z-index: 1
  border-top: 0.8vh solid rgba(255,255,255,0.1)
  padding: 2vh
  background-color: black
  transition: bottom 0.2s
  &:hover
    bottom: 0
    transition: bottom 0.2s
  .st
    font-family: "Press Start 2P"
    -webkit-animation-name: rainbow-txt
    -webkit-animation-duration: 4s
    -webkit-animation-iteration-count: infinite
    font-size: 1.5vh
    text-align: center
    margin: 0 0 1em 0
    cursor: pointer
    transition: font-size 0.2s
    &:nth-last-child(1)
      margin: 0
    &:hover
      font-size: 1.4vh
      transition: font-size 0.2s
  
@-webkit-keyframes rainbow-bg
  0% 
    background-color: red
    box-shadow: 0 0 10px red, 0 0 20px red, 0 0 30px red, 0 0 40px red, 0 0 50px red, 0 0 60px red, 0 0 70px red
  16%
    background-color: #FF7F00
    box-shadow: 0 0 10px #FF7F00, 0 0 20px #FF7F00, 0 0 30px #FF7F00, 0 0 40px #FF7F00, 0 0 50px #FF7F00, 0 0 60px #FF7F00, 0 0 70px #FF7F00
  32%
    background-color: yellow
    box-shadow: 0 0 10px yellow, 0 0 20px yellow, 0 0 30px yellow, 0 0 40px yellow, 0 0 50px yellow, 0 0 60px yellow, 0 0 70px yellow
  48%
    background-color: lime
    box-shadow: 0 0 10px lime, 0 0 20px lime, 0 0 30px lime, 0 0 40px lime, 0 0 50px lime, 0 0 60px lime, 0 0 70px lime
  64%
    background-color: blue
    box-shadow: 0 0 10px blue, 0 0 20px blue, 0 0 30px blue, 0 0 40px blue, 0 0 50px blue, 0 0 60px blue, 0 0 70px blue
  84%
    background-color: #8B00FF
    box-shadow: 0 0 10px #8B00FF, 0 0 20px #8B00FF, 0 0 30px #8B00FF, 0 0 40px #8B00FF, 0 0 50px #8B00FF, 0 0 60px #8B00FF, 0 0 70px #8B00FF
  100%
    background-color: red
    box-shadow: 0 0 10px red, 0 0 20px red, 0 0 30px red, 0 0 40px red, 0 0 50px red, 0 0 60px red, 0 0 70px red
  100%
  
@-webkit-keyframes rainbow-txt
  0% 
    color: red
  16%
    color: #FF7F00
  32%
    color: yellow
  48%
    color: lime
  64%
    color: blue
  84%
    color: #8B00FF
  100%
    color: red
  
.cpb
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/455279/Button-Black-Large.png)
  background-repeat: no-repeat
  background-size: 100% auto
  background-position: center
  filter: invert(100%)
  height: 30px !important
  width: 30px !important
!

JS 

              
                ply = $(".p:nth-child(1)")
ply_2 = $(".p:nth-child(2)")
ball = $(".b")
score = [0,0]
state = false
gameSound = 0.2

init = () => {
  size()
  gBall()
  placeP()
  $(".ply1s").prop("volume", gameSound)
  $(".ply2s").prop("volume", gameSound)
  $(".bounce").prop("volume", gameSound)
  $(".pattle").prop("volume", gameSound)
  announcer = true
  sound = true
  scoreLock = false
  resetScore = false
  cpb = false
}

placeP = () => {
  if (state == false) {
    ply.css("top", $(".s").offset().top + $(".s").height()/2 - ply.height()/2)
    ply_2.css("top", $(".s").offset().top + $(".s").height()/2 - ply_2.height()/2)
  }
}

size = () => {
  w = $(window)
  dO = w.offset
  dH = w.height()
  dW = w.width()
  $(".g").css({
    height: dH,
    width: dW
  })
  gPos()
  sBall()
}

gPos = () => {
  ply.css({
    left: dW - 100
  })
  ply_2.css({
    left: 100
  })
}

$(window).on("resize", () => {
  scoreLock = true
  size()
  placeP()
})

sBall = () => {
  var baseSpeed = 1000
  speed = (dW / 1000 + .8).toFixed(1)
}

gBall = () => {
  ball.css({
    top: Math.floor(Math.random() * dH),
    left: Math.floor(Math.random() * dW)
  })
}

scores = () => {
  for (i=0;i<score.length;i++) {
    if (score[i] >= 99 || resetScore == true) {
      score = [0,0]
      $(".sb p:nth-child(1)").text(score[0])
      $(".sb p:nth-child(2)").text(score[1])
      resetScore = false
    }
  }
  if (scoreLock == false) {
    if (ball.offset().left >= dW) {
      score[0]++
      $(".sb p:nth-child(1)").text(score[0])
      if (announcer == true && sound == true) {$(".ply1s").get(0).play()}
    }
    if (ball.offset().left <= 0) {
      score[1]++
      $(".sb p:nth-child(2)").text(score[1])
      if (announcer == true && sound == true) {$(".ply2s").get(0).play()}
    }
  }
}

ani_ball = () => {
  setInterval(() => {
    
    var o = ball.offset()
    var p1 = ply.offset()
    var p2 = ply_2.offset()
    
    if (o.left <= 0) {
      hor = speed * -1
      if (sound == true) {$(".bounce").get(0).play()}
    } 
    if (o.left >= dW) {
      hor = speed
      if (sound == true) {$(".bounce").get(0).play()}
    }
    if (o.top <= 0) {
      vert = speed * -1
      if (sound == true) {$(".bounce").get(0).play()}
    } 
    if (o.top >= dH) {
      vert = speed
      if (sound == true) {$(".bounce").get(0).play()}
    }
    
    if (o.left + ball.width()/2 >= p1.left && o.left + ball.width()/2 <= p1.left + ply.width()) {
      if (o.top + ball.height()/2 >= p1.top && o.top + ball.height()/2  <= p1.top + ply.height()) {
        if (sound == true) {$(".pattle").get(0).play()}
        hor = speed
      }
    }
    if (o.left - ball.width()/2 >= p2.left && o.left - ball.width()/2 <= p2.left + ply_2.width()) {
      if (o.top - ball.height()/2 >= p2.top && o.top - ball.height()/2 <= p2.top + ply_2.height()) {
        if (sound == true) {$(".pattle").get(0).play()}
        hor = speed * -1
      }
    }
      
    ball.css({
      left: o.left - hor,
      top: o.top - vert
    })
    
    scores()
    
  }, 1)
}

$(".sw .so:nth-child(1)").mousemove((e) => {
  if (state == true) {
    ply_2.css({
      top: e.pageY - ply_2.height()/2
    })
    scoreLock = false
  }
})

$(".sw .so:nth-child(3)").mousemove((e) => {
  if (state == true) {
    ply.css({
      top: e.pageY - ply.height()/2
    })
    scoreLock = false
  }
})

$(".s").on("click", () => {
  ball.fadeIn(100)
  hor = speed
  vert = speed
  state = true
  $(".s").fadeOut(300)
  ani_ball()
})

$(".st:nth-child(1)").on("click", () => {
  if (announcer == true) {
    $(".st:nth-child(1)").css("opacity", "0.1")
    announcer = false
  } else {
    announcer = true
    $(".st:nth-child(1)").css("opacity", "1")
  }
})

$(".st:nth-child(2)").on("click", () => {
  if (sound == true) {
    $(".st:nth-child(2)").css("opacity", "0.1")
    sound = false
  } else {
    sound = true
    $(".st:nth-child(2)").css("opacity", "1")
  }
})

$(".st:nth-child(3)").on("click", () => {
  resetScore = true
})

$(".st:nth-child(4)").on("click", () => {
  if (cpb == false) {
    $(".b").addClass("cpb")
    $(".st:nth-child(4)").css("opacity", "0.1")
    cpb = true
  } else {
    $(".b").removeClass("cpb")
    $(".st:nth-child(4)").css("opacity", "1")
    cpb = false
  }
})

init()
!
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