JSFiddle - React, Tailwind, and code Playground

Floating Labels Form

by Jennifer Perrin

HTML

<div class='container'>
  <header>
    <h1>
      Mailing Address
    </h1>
  </header>
  <div class='fields'>
<div class="field">
  <input id="f" type="text" class='f' />
  <label for="f">First Name</label>
</div>
<div class="field">
  <input id="l" type="text" class='f' />
  <label for="l">Last Name</label>
</div>  
<div class="field">
  <input id="a" type="text" class='f' />
  <label for="a">Mailing Address</label>
</div>
<div class="field city">
  <input id="c" type="text" class='f' />
  <label for="c">City</label>
</div>
<div class="field state">
  <input id="s" type="text" class='f' />
  <label for="s">State</label>
</div>  
<div class="field clear">
    <input id="n" type="text" class='f' />           <label for="n">Zip</label>
</div>
  </div>
  <footer>
    <button class='submit'>Submit</button>
  </footer>
</div>

CSS

@import url(http://fonts.googleapis.com/css?family=Raleway:300);
* {
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  font-family: "Raleway", sans-serif;
  font-weight: 300;
}

body {
  background: #f2f2f2;
}

.clear {
  clear: both;
}


.container {
  width: 500px;
  margin: 25px auto;
  background: white;
  border-radius: 3px;
  box-shadow: 0 0 0 8px rgba(68, 68, 68, 0.05)
}

header, footer {
  border-radius: 3px 3px 0 0;
  background: #fafafc;
  padding: 10px 10px 7px 10px;
  border-bottom: solid 1px #d8d8d8;
}
header h1, footer h1 {
  color: #3b9dc4;
  margin: 0;
  font-size: 1.4em;
  font-weight: 300;
}

footer {
  margin-top: 5px;
  padding: 10px;
  border-top: solid 1px #d8d8d8;
  border-bottom: none;
  border-radius: 0 0 3px 3px;
}

.fields {
  padding: 0 10px;
}

.field {
  position: relative;
  height: 45px;
  width: 100%;
  border-bottom: solid 1px #bfbfbf;
}
.field:last-of-type {
  border-bottom: none;
}
.field.city {
  float: left;
  width: 75%;
}
.field.state {
  float: left;
  width: 25%;
}

.f {
  border: none;
  background: transparent;
  height: 32px;
  width: 100%;
  position: absolute;
  top: 13px;
  outline: none;
  font-size: 1em;
}
.f + label {
  position: absolute;
  top: 20px;
  left: 0px;
  color: #727272;
  transition: .3s;
  -webkit-transition: .3s;
}
.f:focus + label, .f.set + label {
  font-weight: 500;
  font-size: 9px;
  top: 5px;
  color: #3b9dc4;
  transition: .3s;
  -webkit-transition: .3s;
}
.f.set + label {
  color: #727272;
}

.submit {
  background: none;
  border: none;
  color: #3b9dc4;
  font-size: 1.2em;
  cursor: pointer;
  padding: 0;
}

JavaScript

$("input.f").on("focusout", function(){
  var me = $(this);
  if(me.val() !== ""){
    me.addClass("set");
  } else {
    me.removeClass("set");
  }
});