.form {
    margin: auto;
    position:fixed;
    width: 80%;
    top:25%;
    left: 10%;
    right:auto;
    bottom:auto;
    z-index:101;
    padding: 20px 30px;
    display:none;
    background: #fff;
    border: 1px solid #dfdfdf;
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d;
    -webkit-perspective-origin: 50px center;
            perspective-origin: 50px center;
    -webkit-perspective: 2000px;
            perspective: 2000px;
    -webkit-transition: -webkit-transform 1s ease;
    transition: -webkit-transform 1s ease;
    transition: transform 1s ease;
    transition: transform 1s ease, -webkit-transform 1s ease;
  }
  .form::before, .form::after {
    content: "";
    position: absolute;
    width: 100%;
    left: 0;
  }
  .form::before {
    height: 100%;
    top: 0;
    -webkit-transform: translateZ(-100px);
            transform: translateZ(-100px);
    background: #333;
    opacity: 0.3;
  }
  .form::after {
    content: "CORRECTO !";
    -webkit-transform: translateY(-50%) translateZ(-101px) scaleX(-1);
            transform: translateY(-50%) translateZ(-101px) scaleX(-1);
    top: 50%;
    color: #fff;
    text-align: center;
    font-weight: bold;
  }
  
  .field {
    position: relative;
    background: #cfcfcf;
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d;
  }
  .field + .field {
    margin-top: 10px;
  }
  
  .icon {
    width: 24px;
    height: 24px;
    position: absolute;
    top: calc(50% - 12px);
    left: 12px;
    -webkit-transform: translateZ(50px);
            transform: translateZ(50px);
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d;
  }
  .icon::before, .icon::after {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
  }
  .icon::after {
    -webkit-transform: translateZ(-23px);
            transform: translateZ(-23px);
    opacity: 0.5;
  }
  
  .input {
    border: 1px solid #dfdfdf;
    background: #fff;
    height: 48px;
    line-height: 48px;
    padding: 0 10px 0 48px;
    width: 100%;
    -webkit-transform: translateZ(26px);
            transform: translateZ(26px);
  }
  
  .button {
    display: block;
    width: 100%;
    border: 0;
    text-align: center;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(45deg, #e53935, #e35d5b);
    margin-top: 20px;
    padding: 14px;
    position: relative;
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d;
    -webkit-transform: translateZ(26px);
            transform: translateZ(26px);
    -webkit-transition: -webkit-transform 0.3s ease;
    transition: -webkit-transform 0.3s ease;
    transition: transform 0.3s ease;
    transition: transform 0.3s ease, -webkit-transform 0.3s ease;
    cursor: pointer;
  }
  .button:hover {
    -webkit-transform: translateZ(13px);
            transform: translateZ(13px);
  }
  
  .side-top-bottom {
    width: 100%;
  }
  .side-top-bottom::before, .side-top-bottom::after {
    content: "";
    width: 100%;
    height: 26px;
    background: linear-gradient(45deg, #e2231e, #df4745);
    position: absolute;
    left: 0;
  }
  .side-top-bottom::before {
    -webkit-transform-origin: center top;
            transform-origin: center top;
    -webkit-transform: translateZ(-26px) rotateX(90deg);
            transform: translateZ(-26px) rotateX(90deg);
    top: 0;
  }
  .side-top-bottom::after {
    -webkit-transform-origin: center bottom;
            transform-origin: center bottom;
    -webkit-transform: translateZ(-26px) rotateX(-90deg);
            transform: translateZ(-26px) rotateX(-90deg);
    bottom: 0;
  }
  
  .side-left-right {
    height: 100%;
  }
  .side-left-right::before, .side-left-right::after {
    content: "";
    height: 100%;
    width: 26px;
    position: absolute;
    top: 0;
  }
  .side-left-right::before {
    background: #e53935;
    -webkit-transform-origin: left center;
            transform-origin: left center;
    -webkit-transform: rotateY(90deg);
            transform: rotateY(90deg);
    left: 0;
  }
  .side-left-right::after {
    background: #e35d5b;
    -webkit-transform-origin: right center;
            transform-origin: right center;
    -webkit-transform: rotateY(-90deg);
            transform: rotateY(-90deg);
    right: 0;
  }
  
  .email .icon::before, .email .icon::after {
    background: url(https://image.flaticon.com/icons/svg/131/131040.svg) center/contain no-repeat;
  }
  
  .password .icon::before, .password .icon::after {
    background: url(https://image.flaticon.com/icons/svg/130/130996.svg) center/contain no-repeat;
  }
  
  .face-up-left {
    -webkit-transform: rotateY(-30deg) rotateX(30deg);
            transform: rotateY(-30deg) rotateX(30deg);
  }
  
  .face-up-right {
    -webkit-transform: rotateY(30deg) rotateX(30deg);
            transform: rotateY(30deg) rotateX(30deg);
  }
  
  .face-down-left {
    -webkit-transform: rotateY(-30deg) rotateX(-30deg);
            transform: rotateY(-30deg) rotateX(-30deg);
  }
  
  .face-down-right {
    -webkit-transform: rotateY(30deg) rotateX(-30deg);
            transform: rotateY(30deg) rotateX(-30deg);
  }
  
  .form-complete {
    -webkit-animation: formComplete 2s ease;
            animation: formComplete 2s ease;
  }
  
  .form-error {
    -webkit-animation: formError 2s ease;
            animation: formError 2s ease;
  }
  
  input:active, input:focus, button:active, button:focus {
    outline: none;
    border: 1px solid #e77371;
  }
  
  @-webkit-keyframes formComplete {
    50%, 55% {
      -webkit-transform: rotateX(30deg) rotateY(180deg);
              transform: rotateX(30deg) rotateY(180deg);
    }
    100% {
      -webkit-transform: rotateX(0deg) rotateY(1turn);
              transform: rotateX(0deg) rotateY(1turn);
    }
  }
  
  @keyframes formComplete {
    50%, 55% {
      -webkit-transform: rotateX(30deg) rotateY(180deg);
              transform: rotateX(30deg) rotateY(180deg);
    }
    100% {
      -webkit-transform: rotateX(0deg) rotateY(1turn);
              transform: rotateX(0deg) rotateY(1turn);
    }
  }
  @-webkit-keyframes formError {
    0%, 100% {
      -webkit-transform: rotateX(0deg) rotateY(0deg);
              transform: rotateX(0deg) rotateY(0deg);
    }
    25% {
      -webkit-transform: rotateX(-25deg);
              transform: rotateX(-25deg);
    }
    33% {
      -webkit-transform: rotateX(-25deg) rotateY(45deg);
              transform: rotateX(-25deg) rotateY(45deg);
    }
    66% {
      -webkit-transform: rotateX(-25deg) rotateY(-30deg);
              transform: rotateX(-25deg) rotateY(-30deg);
    }
  }
  @keyframes formError {
    0%, 100% {
      -webkit-transform: rotateX(0deg) rotateY(0deg);
              transform: rotateX(0deg) rotateY(0deg);
    }
    25% {
      -webkit-transform: rotateX(-25deg);
              transform: rotateX(-25deg);
    }
    33% {
      -webkit-transform: rotateX(-25deg) rotateY(45deg);
              transform: rotateX(-25deg) rotateY(45deg);
    }
    66% {
      -webkit-transform: rotateX(-25deg) rotateY(-30deg);
              transform: rotateX(-25deg) rotateY(-30deg);
    }
  }
  small {
    color: #999;
    text-align: center;
    display: block;
    margin-top: 20px;
    -webkit-backface-visibility: hidden;
            backface-visibility: hidden;
  }
  
/*   html, body {
    width: 100%;
    height: 100%;
    display: -webkit-box;
    display: flex;
    background: linear-gradient(45deg, #83a4d4, #b6fbff);
  } */
  
  *, *::before, *::after {
    box-sizing: border-box;
  }