Сheckbox ~

by Sergey Linnick

HTML

<label for="reveal-email" class="btn" style="width: 300px"> Sign Up</label>
<input type="checkbox" id="reveal-email" role="button">
<div id="email">
  <form id="email-form" class="nice" action="" method="post">
    <input class="input-text required email" type="text" name="EMAIL" id="id_email" placeholder="Email" />
    <input type="hidden" name="name" id="id_name_email">
    <a class="btn">Apply</a>
  </form>
</div>

CSS

input[type=checkbox] {
  display: none;
}

input[type=checkbox]:checked ~ .remove-check {
  display: none;
}

input[type=checkbox]:checked ~ #email {
  display: block;
}

#email {
  display: none;
}


/*  ------ Just styles ------ */

input[type=text] {
  width: 225px;
  padding: 12px 14px;
}

body {
  font-family: "Helvetica Neue", "Helvetica", Helvetica, Arial, sans-serif;
  font-weight: normal;
  font-style: normal;
  font-size: 14px;
  line-height: 1;
  color: #222222;
}

.btn {
  width: auto;
  background: #2ba6cb;
  border: 1px solid #1e728c;
  -webkit-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset;
  -moz-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset;
  color: white;
  cursor: pointer;
  display: inline-block;
  font-family: inherit;
  font-size: 14px;
  font-weight: bold;
  line-height: 1;
  margin: 0;
  padding: 10px 20px 11px;
  position: relative;
  text-align: center;
  text-decoration: none;
  -webkit-transition: background-color 0.15s ease-in-out;
  -moz-transition: background-color 0.15s ease-in-out;
  -o-transition: background-color 0.15s ease-in-out;
  transition: background-color 0.15s ease-in-out;
}

.btn:hover {
  background: #006582;
}