* {
  box-sizing: border-box;
  padding: 0px;
  margin: 0px;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: #1e2029;
}

.box {
  position: relative;
  width: 380px;
  height: 350px;
  background-color: #1c1c1c;
  border-radius: 8px;
  -webkit-border-radius: 8px;
  -moz-border-radius: 8px;
  -ms-border-radius: 8px;
  -o-border-radius: 8px;
  overflow: hidden;
}

.box::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 380px;
  height: 480px;
  background: linear-gradient(0deg, #d9ff00, transparent);
  transform-origin: bottom right;
  animation: anime1 6s linear infinite;
  -webkit-animation: anime1 6s linear infinite;
}

.box::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 380px;
  height: 480px;
  background: linear-gradient(0deg, #d9ff00, transparent);
  transform-origin: bottom right;
  animation: anime2 6s linear infinite;
  -webkit-animation: anime2 6s linear infinite;
  animation-delay: 0.5s;
}

@keyframes anime1 {
  0% {
    transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
  }
}

@keyframes anime2 {
  0% {
    transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
  }
  100% {
    transform: rotate(-360deg);
    -webkit-transform: rotate(-360deg);
    -moz-transform: rotate(-360deg);
    -ms-transform: rotate(-360deg);
    -o-transform: rotate(-360deg);
  }
}

.form {
  position: absolute;
  background-color: #28292d;
  border-radius: 8px;
  -webkit-border-radius: 8px;
  -moz-border-radius: 8px;
  -ms-border-radius: 8px;
  -o-border-radius: 8px;
  z-index: 10;
  padding: 50px 40px;
  display: flex;
  flex-direction: column;
  inset: 2px;
}

.form h2 {
  color: #d9ff00;
  font-weight: 500;
  text-align: center;
  letter-spacing: 0.5px;
}

.inputBox {
  position: relative;
  width: 300px;
  margin-top: 35px;
}

.inputBox input {
  position: relative;
  width: 100%;
  padding: 20px 10px 10px;
  border: none;
  outline: none;
  background-color: transparent;
  color: #23242a;
  font-size: 1em;
  letter-spacing: 0.05px;
  z-index: 10;
}

.inputBox label {
  position: absolute;
  left: 0px;
  padding: 20px 0px 10px;
  font-size: 1em;
  color: #8f8f8f;
  letter-spacing: 0.05em;
  transition: all 0.4s ease;
  -webkit-transition: all 0.4s ease;
  -moz-transition: all 0.4s ease;
  -ms-transition: all 0.4s ease;
  -o-transition: all 0.4s ease;
}

.inputBox input:valid ~ label,
.inputBox input:focus ~ label {
  color: #d9ff00;
  transform: translateY(-40px);
  -webkit-transform: translateY(-40px);
  -moz-transform: translateY(-40px);
  -ms-transform: translateY(-40px);
  -o-transform: translateY(-40px);
}

.inputBox i {
  position: absolute;
  left: 0px;
  bottom: 0px;
  width: 100%;
  height: 2px;
  background-color: #d9ff00;
  border-radius: 4px;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  -ms-border-radius: 4px;
  -o-border-radius: 4px;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
  -o-transition: all 0.5s;
  pointer-events: none;
  z-index: 0;
}

.inputBox input:valid ~ i,
.inputBox input:focus ~ i {
  height: 44px;
}

.links {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.links a {
  margin: 10px 0px;
  font-size: 0.75em;
  color: #8f8f8f;
  text-decoration: none;
}

.links a:nth-child(2) {
  color: #d9ff00;
}

.button {
  background-color: #d9ff00;
  font-size: 16px;
  margin-top: 30px;
  padding: 12px 20px;
  text-transform: uppercase;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  color: #23242a;
  cursor: pointer;
  border: none;
  border-radius: 25px;
  -webkit-border-radius: 25px;
  -moz-border-radius: 25px;
  -ms-border-radius: 25px;
  -o-border-radius: 25px;
  transition: all 0.4s ease;
  -webkit-transition: all 0.4s ease;
  -moz-transition: all 0.4s ease;
  -ms-transition: all 0.4s ease;
  -o-transition: all 0.4s ease;
  box-shadow: 0px 0px 10px 1px #d9ff00;
}

.button:hover {
  box-shadow: 0px 0px 25px 1px #d9ff00;
}