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HTML

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<div class="landing">
<section class="topslot">
	<div class="wrapper">
		
		<div class="brief">
			<h1>slate</h1>
      <p><span id="verb">continue</span> your adventure</p>
		</div>
		
	</div>
</section>

<section>
	<div class="main">
    <form method="POST" action="" accept-charset="UTF-8">
      <input placeholder="username" name="username" type="text" />
      <input placeholder="password" name="password" type="password" value="" />
      <div class="signup-fields">
        <input id="email" placeholder="email" name="email" type="email" value="" />
      </div>
      <input id="submit" type="submit" value="log in" />
    </form>

    <div class="extras">
      <a id="signup" href="#">sign up</a>
    </div>

	</div>
		
</section>
</div>
!

CSS 

              
                @import "compass/css3";

$primaryColour: #27AE60;

@import url(https://fonts.googleapis.com/css?family=Open+Sans:300,400,600,700);
@import "compass/css3/filter";
@import "compass/css3/transition";

body {
  font-family: "Open Sans";
	  background: $primaryColour;
  height: 100vh;
}

input:focus,
select:focus,
textarea:focus,
button:focus {
  outline: none;
}

.topslot {
  background-image: url("https://i.imgur.com/UkKDCJy.jpg");
  background-color: darken($primaryColour,5%);
  background-position: center;
  background-size: cover;
  padding: 1rem 0rem 6rem 0rem;
  box-shadow: 0em -4em 8em -4em rgba(0,0,0,0.5) inset;
  border-bottom: 0.3rem solid darken($primaryColour,10%);
}
.brief {
  display: block;
  color: #fff;
  font-size: 4rem;
  font-weight: 400;
  text-align: center;
  margin: 2rem 0rem 0rem;
  h1 {
    font-size: 5rem;
    margin: 0rem;
  }
  p {
    margin: 0rem;
    font-style: italic;
    font-weight: 300;
    font-size: 1.09rem;
  }
}

form {
  padding: 1rem;
  background: #fff;
  border-radius: 0.25rem;
  box-shadow: 0rem 0.3rem 1rem 0.1rem rgba(0,0,0,0.35);
}

input {
  margin-bottom: 1rem;
  display: block;
  @include box-sizing(border-box);
}

input:not([type=submit]){
  text-align: center;
  padding: 0.25rem 0.5rem;
  border-radius: 0.15rem;
  border: 2px solid lighten($primaryColour,5%);
  //@include transition(border 0.5s cubic-bezier(0.605, 1.310, 0.455, 1.005));
  &:focus { border-left-width: 0.5rem; }
  box-shadow: 0rem 0.25rem 0.25rem 0rem rgba(0,0,0,0.15) inset;
  font-size: 1.5rem;
  font-weight: 300;
  width: 100%;
}

input[type=submit] {
  border: 0rem;
  width: 100%;
  background-color: $primaryColour;
  color: white;
  margin-bottom: 0rem;
  font-size: 1.4rem;
  padding: 0.3rem 0rem;
  @include transition(background 0.5s ease);
  &:hover {
    cursor: pointer;
    background-color: lighten($primaryColour,10%);
  }
  &:active {
    -webkit-transition-duration: 0s;
    background-color: darken($primaryColour,5%);
  }
}

#signup.is-on {
  color: #fff;
}
.signup-fields {
  // display: none;
}

.signup-fields {
  height: 0;
  opacity: 0;
  &.is-on {
    opacity: 1;
    height: 60px;
  }
}

.main {
  margin: -2.5rem auto 0rem;
  width: 16rem;
  .extras {
    text-align: center;
    font-size: 0.8rem;
    margin-top: 1rem;
    a {
      text-decoration: none;
      font-weight: 300;
      color: lighten($primaryColour, 25%);
      &:hover {
        color: #fff;
        text-decoration: underline;
      }
    }
  }
}
!

JS 

              
                $('#signup').click(function(){
  if($(this).hasClass("is-on"))
  {
    // $(".signup-fields").slideUp();
    $(this).removeClass('is-on').html("sign up");
    $('.signup-fields').removeClass('is-on');
    $('#submit').attr('value','log in');
    $('#verb').html('continue');
  }
  else
  { 
    // $(".signup-fields").slideDown();
    $(this).addClass('is-on').html("nevermind, log in");
    $('.signup-fields').addClass('is-on');
    $('#submit').attr('value','sign up');
    $('#verb').html('begin');
  }
});
!
999px

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