#login {
  position: absolute;
  top: 100px;
  left: 50%;
  /*display: none;*/
  width: 200px;
  margin-left: -140px;
  padding: 25px 40px 35px;
  box-shadow: 0 0 5px #ccc;
}

label {
  position: relative;
  display: inline-block;
  height: 52px;
  width: 100%;
  margin-bottom: 10px;
}

input {
  height: 50px;
  padding: 0 10px;
  border: 0;
  border-bottom: 2px solid #ccc;
  font-size: 14px;
  outline: none;
}

input + span:before {
  content: attr(data-name);
  display: block;
  font-size: 16px;
  position: absolute;
  top: 0;
  left: 10px;
  line-height: 50px;
  transition: all 200ms;
}

.--small + span:before,
input:focus + span:before {
  font-size: 10px;
  line-height: 16px;
}