<form>
  <input id="input-1" type="text" placeholder="John Doe" required autofocus />
  <label for="input-1">
    <span class="label-text">Full Name</span>
    <span class="nav-dot"></span>
    <div class="signup-button-trigger">Sign Up</div>
  </label>
  <input id="input-2" type="text" placeholder="john" required />
  <label for="input-2">
    <span class="label-text">Username</span>
    <span class="nav-dot"></span>
  </label>
  <input id="input-3" type="email" placeholder="email@address.com" required />
  <label for="input-3">
    <span class="label-text">Email</span>
    <span class="nav-dot"></span>
  </label>
  <input id="input-4" type="text" placeholder="&#9679;&#9679;&#9679;&#9679;&#9679;&#9679;" required />
  <label for="input-4">
    <span class="label-text">Password</span>
    <span class="nav-dot"></span>
  </label>
  <input id="input-5" type="text" placeholder="&#9679;&#9679;&#9679;&#9679;&#9679;&#9679;" required />
  <label for="input-5">
    <span class="label-text">Confirm Password</span>
    <span class="nav-dot"></span>
  </label>
  <button type="submit">Create Your Account</button>
  <p class="tip">Press Tab</p>
  <div class="signup-button">Sign Up</div>
</form>
$background: #111E25;
$dark: #111;
$primary: #bb1515;

input, 
button {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -300%);
  display: block;
  width: 70vw;
  opacity: 0;
  pointer-events: none;
  transition: all .5s cubic-bezier(.4, .25, .8, .3);
}

input {
  padding: .25rem 0;
  border: 0;
  border-bottom: 1px solid $primary;
  outline: 0;
  background: transparent;
  color: #fff;
  font-size: 3rem;
  line-height: 4rem;
  letter-spacing: .125rem;
  transition: all .5s cubic-bezier(.4, .25, .8, .3);
}

input::selection {
  background: rgba($primary, 0.25);
}

button,
.signup-button {
  padding: .25em 0;
  border: 0;
  outline: 0;
  background: $primary;
  color: rgba(#fff, 0.85);
  font-size: 2rem;
  line-height: 3.6rem;
  letter-spacing: .0625rem;
  box-shadow: 0 3px 5px 1px rgba(#000, 0.25);
  text-shadow: 0 -2px 0 rgba(#000, 0.25), 0 1px 0 rgba(#fff, 0.2);
}

input:focus,
button:focus {
  opacity: 1;
  transform: translate(-50%, -100%);
  pointer-events: auto;
  transition: all .4s cubic-bezier(.1, .45, .1, .85) .5s;
  z-index: 10;
}

input:focus ~ input,
input:focus ~ button {
  transform: translate(-50%, 500%);
  transition: all .5s ease-in;
}
input:focus ~ label .label-text {
  transform: translate(-50%, 300%);
  transition: all .5s ease-in;
}
input:focus ~ .tip {
  opacity: 1;
}
input:focus ~ .signup-button,
button:focus ~ .signup-button {
  opacity: 0;
}

input:focus + label .label-text {
  opacity: 1;
  transform: translate(-50%, -100%);
  transition: all .3s cubic-bezier(.1, .45, .1, .85) .4s;
}
input:focus + label .nav-dot:before {
  background: darken($primary, 5%);
  box-shadow: 0 0 0 .15rem $dark, 0 0 .05rem .26rem $primary;
}

.tip {
  position: fixed;
  top: 57%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70%;
  opacity: 0;
  color: #fff;
  font-size: .875rem;
  font-weight: 300;
  letter-spacing: .125rem;
  text-transform: uppercase;
  text-align: right;
  transition: opacity .25s .5s;
}

.signup-button,
.signup-button-trigger {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -100%);
  width: 70vw;
  padding: .25rem 0;
  line-height: 3.6rem;
  text-align: center;
  pointer-events: none;
  cursor: pointer;
  transition: opacity .4s .3s;
}

.signup-button-trigger {
  opacity: 0;
  pointer-events: auto;
}

.label-text {
  position: fixed;
  top: calc(50% - 4rem);
  left: 50%;
  transform: translate(-50%, -300%);
  width: 70vw;
  padding: 3.125rem 0 1.5rem;
  text-transform: uppercase;
  color: #fff;
  opacity: 0;
  font-size: 1.125rem;
  font-weight: 300;
  letter-spacing: .125rem;
  pointer-events: none;
  transition: all .4s cubic-bezier(.4, .25, .8, .3) .05s;
}

.nav-dot {
  cursor: pointer;
  position: fixed;
  padding: .625rem 1.25rem .625rem .625rem;  
  top: 52%;
  right: 1.25rem;
  &:before {
    content: '';  
    display: inline-block;  
    border-radius: 50%;
    width: .375rem;
    height: .375rem;
    margin-right: .625rem;  
    position: fixed;
    background-color: lighten($background, 3%);
    border: 0;
    transition: all 0.25s;
  }
  &:hover:before {
    width: .625rem;
    height: .625rem;
    margin-top: -.125rem;
    margin-left: -.125rem;
    background-color: darken($primary, 5%);
  }
}

@for $i from 1 through 5 {
  label[for="input-#{$i}"] .nav-dot {
      margin-top: -150px + (25 * $i);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  background-image: linear-gradient(to bottom right, $background 0%, $dark 100%);
  font-family: 'Lato', sans-serif;
}

form {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
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