main.css

body {
  margin: 0;
}

.title {
  color: white;
  margin: 0;
  padding: 9px 0 14px 41px;
  font-family: Helvetica, Arial, "Lucida Grande", sans-serif;
  font-size: 25px;
  box-sizing: border-box;
  text-shadow: 1px 1px 1px black;
  background: -moz-linear-gradient(top, rgb(104, 104, 104) 0%, rgb(83, 83, 83) 100%);
  background: linear-gradient(to bottom, rgb(104, 104, 104) 0%, rgb(83, 83, 83) 100%);
  border-bottom: 1px solid black;
}

.content {
  padding: 13px 41px;
}

.textField {
  width: 90%;
  border-radius: 0px;
  padding: 8px;
  font-size: 20px;
  margin: 0 auto 20px auto;
  display: block;
}

.listen, .vibrate {
  width: 50px;
  height: 50px;
}

.button {
  display: inline-block;
  padding: 3px 13px;
  font-family: arial;
  font-size: 14px;
  text-align: center;
  border: 1px solid #ddd;
  background-color: #eee;
  cursor: pointer;
}

.buttons {
  text-align: center;
}