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CSS

:root{
    --light-grey:#e0e0e0;
    --dark-grey:#c5c5c5;
  }
  body{
    margin: 0;
    padding: 0;width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #151F28;
    font-family: monospace,Arial, Helvetica, sans-serif;
  }
  body *{
    box-sizing: border-box;
    outline: none;
  }
  .container{
    width: 210px;
    position: relative;
  }
  input {
      background: #ececec;
      border: 0;
      font-size: 1em;
      width: 100%;
      border-radius: 4px;
      padding: 10px;
      position: absolute;
      z-index: 1;
      height: 40px;
      color: #808080;
      font-family: monospace, Arial, Helvetica, sans-serif;
  }
  
  input::placeholder {
      color: #808080;
      opacity: 1;
  }
  
  input:-ms-input-placeholder {
      color: #808080;
  }
  
  input::-ms-input-placeholder {
      color: #808080;
  }
  
  input.active {
      animation: scanning 1s ease 0s 1;
      background: linear-gradient(90deg, #02de0b 50%, #ececec 100%);
      background-repeat: no-repeat;
      background-position: -210px;
      background-color: #ececec;
  }
  
  @keyframes scanning {
      0% {
          background-position: 150px;
      }
      100% {
          background-position: -210px;
      }
  }
  #reveal{
    width: 40px;
    height: 40px;
    border-radius: 4px;
    border: 0;
    background:linear-gradient(145deg, #72c0ff ,#0070ca);
    cursor: pointer;
    position: absolute;
    z-index: 3;
    right: 0px;
    bottom: 2px solid var(--light-grey);
    transition: all 0.5s ease 0s;
    border-top-color: #cccccc;
    border-bottom-color: #eee;
  }
#reveal:before {
    content: "";
    background: radial-gradient(
        circle at center,
        #00000080 1px,
        #00000080 2px,
        #00000080 3px,
        #00000080 4px
    );
    width: 18px;
    height: 18px;
    border-radius: 0 100%;
    transform: rotate(-45deg) skew(-10deg, -10deg);
    left: 9px;
    position: absolute;
    top: 9px;
    transition: all 0.25s ease 0s;
}
#reveal:after {
    content: "";
    width: 20px;
    height: 18px;
    border-radius: 100%;
    left: 6px;
    top: 4px;
    position: absolute;
    border: 2px dotted #fff0;
    border-bottom-color: #00000080;
    transition: all 0.25s ease 0s;
}
  
  #reveal:disabled {
      transition: all 0.5s ease 0s;
      background: linear-gradient(145deg, #ced5e0, #757575) !important;
      cursor: default;
  }
  
  #reveal.open {
      transition: all 0.5s ease 0s;
      background: linear-gradient(145deg, #8ce88f, #009205);
  }
  
  #reveal.open:after {
      transform: rotateX(-180deg);
      top: 10px;
      background: radial-gradient(
          circle at 50% 12px,
          #00000000 1px,
          #ececec 2px,
          #ffffff 3px,
          #00000000 4px
      );
  }
  
  #reveal span:before {
      display: none;
      font-family: monospace;
  }
  
  #reveal:hover span:before {
      content: "Show Password";
      display: block;
      position: absolute;
      background: #4fa8ef;
      top: -4.5em;
      padding: 0.45em 0.5em;
      left: -0.9em;
      border-radius: 2px;
      font-size: 0.85em;
      color: #1d4c72;
      min-height: 2.25em;
  }
  
  #reveal:hover span:after {
      content: "";
      display: block;
      position: absolute;
      border: 0.7em solid transparent;
      border-top-color: #4fa8ef;
      left: 0.7em;
      top: -1.15em;
  }
  
  #reveal.open:hover span:before {
      content: "Hide Password";
      background: #61cd64 !important;
      color: #215d23;
  }
  
  #reveal.open:hover span:after {
      border-top-color: #61cd64;
  }
  
  #reveal[disabled="disabled"]:hover span:before {
      content: "Empty Password";
      background: #b3b8c0 !important;
      color: #4d4e51;
  }
  
  #reveal[disabled="disabled"]:hover span:after {
      border-top-color: #b3b8c0;
  }
  
  #fakepass {
      font-size: 1em;
      width: 0%;
      border-radius: 4px 0 0 4px;
      position: absolute;
      background: #ececec;
      z-index: 2;
      height: 40px;
      top: 0;
      right: 0;
      left: 0;
      transition: all 1s ease 0s;
      width: 0;
      line-height: 40px;
      text-indent: 10px;
      overflow: hidden;
      box-shadow: 0.15em 0.15em 0.25em var(--dark-grey) inset,
          -0.15em -0.15em 0.25em #ffffff80 inset;
      animation: scan-hide 1s ease-out 0s 1;
      color: #808080;
  }
  
  #fakepass:before {
      content: "";
      height: 40px;
      width: 0px;
      position: absolute;
      right: 13px;
      top: 0;
      box-shadow: -10px 0 20px 10px #33a4ffad, 0 0 10px 5px #33a4ffab;
  }
  
  #fakepass.scan {
      display: block;
      animation: scan-show 1s ease-out 0s 1;
      width: 0%;
      left: 0;
  }
  
  #fakepass.scan:before {
      display: none;
  }
  
  #fakepass:after {
      content: "";
      height: 40px;
      width: 2px;
      background: #92ceff;
      position: absolute;
      right: 10px;
      top: 0;
      box-shadow: 0 0 3px 1px #33a4ff, 0 0 5px 3px #33a4ff;
      animation: light 0.15s ease 0s infinite;
  }
  
  #fakepass.scan:after {
      background: #07ff10;
      box-shadow: 0 0 3px 1px #00cc08, 0 0 5px 3px #00cc08;
      right: 5px;
  }
  
  @keyframes light {
      50% {
          opacity: 0.5;
      }
  }
  
  @keyframes scan-show {
      0% {
          width: 100%;
      }
      100% {
          width: 0%;
      }
  }
  
  @keyframes scan-hide {
      0% {
          width: 0%;
          left: 0;
          right: inherit;
      }
      98% {
          width: 100%;
          left: 0;
          right: inherit;
      }
      99% {
          width: 100%;
          left: inherit;
          right: 0;
      }
      100% {
          width: 0%;
          left: inherit;
          right: 0;
      }
  }
  
  @-moz-document url-prefix() {
      #fakepass {
          text-shadow: 0 0 2px #666, 0 0 2px #666, 0 0 2px #666, 0 0 2px #666,
              0 0 2px #666, 0 0 2px #666, 0 0 2px #666, 0 0 2px #666;
      }
  }

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