Bootstrap Form Animation

by Ramkumar Pillai

HTML

<div class="container">
	<div class="row">
		<div class="col-lg-12">
			<form class="go-bottom" role="form">
			  <h2>To Bottom</h2>
			  <div class="form-group">
			    <input id="name" name="name" type="text" class="form-control" required>
			    <label for="name">Your Name</label>
			  </div>
			  <div class="form-group">
			    <input id="phone" name="phone" type="tel" class="form-control" required>
			    <label for="phone">Primary Phone</label>
			  </div>
			  <div class="form-group">
			    <textarea id="message" name="phone" class="form-control" rows="5" required></textarea>
			    <label for="message">Message</label>
			  </div>
			</form>
		</div>
	</div>

  <div class="row">
		<div class="col-lg-12">
			<form class="go-right" role="form">
			  <h2>To Right</h2>
			  <div class="form-group">
			    <input id="name" name="name" type="text" class="form-control" required>
			    <label for="name">Your Name</label>
			  </div>
			  <div class="form-group">
			    <input id="phone" name="phone" type="tel" class="form-control" required>
			    <label for="phone">Primary Phone</label>
			  </div>
			  <div class="form-group">
			    <textarea id="message" name="phone" class="form-control" rows="5" required></textarea>
			    <label for="message">Message</label>
			  </div>
			</form>
		</div>
	</div>
</div>

CSS

form > div {
  position: relative;
  overflow: hidden;
}

form input:focus + label, form textarea:focus + label {
  background: rgba(0,0,0,0.5);
  color: #fff;
  z-index: 2;
  text-transform: uppercase;
}

form label {
  position: absolute;
  color: #999;
  padding: 10px 20px;
  line-height: 1;
  margin-bottom: 0;

  -webkit-transition: background 0.2s, color 0.2s, top 0.2s, bottom 0.2s, right 0.2s, left 0.2s;
  -moz-transition: background 0.2s, color 0.2s, top 0.2s, bottom 0.2s, right 0.2s, left 0.2s;
  transition: background 0.2s, color 0.2s, top 0.2s, bottom 0.2s, right 0.2s, left 0.2s;
}

/* from bottom */

form.go-bottom label {
  top: 100%;
  bottom: 0;
  right: 0;
  min-width: 20%;
}

form.go-bottom input:focus + label, form.go-bottom textarea:focus + label {
  top: 0;
}

/* from right */

form.go-right label {
  top: 0;
  right: 100%;
  bottom: 0px;
  min-width: 20%;
}
form.go-right input:focus + label, form.go-right textarea:focus + label {
  right: 0;
}