#feedback-form {
  width: 280px;
  background-color: #fcfcfc;
  padding: 20px 50px 40px;
  box-shadow: 1px 4px 10px 1px #aaa;
  font-family: sans-serif;
}

#feedback-form * {
  box-sizing: border-box;
}

#feedback-form h2 {
  text-align: center;
  margin-bottom: 30px;
}

#feedback-form input {
  margin-bottom: 15px;
}

#feedback-form input[type=text] {
  display: block;
  height: 32px;
  padding: 6px 16px;
  width: 100%;
  border: none;
  background-color: #f3f3f3;
}

#feedback-form input[type=email] {
  display: block;
  height: 32px;
  padding: 6px 16px;
  width: 100%;
  border: none;
  background-color: #f3f3f3;
}

#feedback-form label {
  color: #777;
  font-size: 0.8em;
}

#feedback-form input:not(:checked)+#feedback-phone {
  height: 0;
  padding-top: 0;
  padding-bottom: 0;
}

#feedback-form #feedback-phone {
  transition: .3s;
}

#feedback-form button[type=submit] {
  display: block;
  margin: 20px auto 0;
  width: 150px;
  height: 40px;
  border-radius: 25px;
  border: none;
  color: #eee;
  font-weight: 700;
  box-shadow: 1px 4px 10px 1px #aaa;

  background: #207cca;
  /* Old browsers */
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#207cca', endColorstr='#9f58a3', GradientType=1);
  /* IE6-9 */
}