.register-button {
  background-color: #B57EFB;
  color: white;
  width: 92.16px;
  height: 2.7rem;
  border-radius: 10px;
  border: 0px;
  margin-top: 36px;
}

.r-form-input {
  width: 290px;
  height: 48px;
  border: 5px solid #E7E7E7;
  border-radius: 17px;
  box-sizing: border-box;
  margin-bottom: 14px;
}

#register-username {
  margin-top: 60px;
}

@media only screen and (min-width: 640px) {
  .register-title {
    font-size: 40px;
  }

  .register-button {
    width: 150px;
    height: 60px;
    margin-top: 36px;
    font-size: 25px;
    border-radius: 26px;
  }
  
  .r-form-input {
    width: 430px;
    height: 68px;
    border-radius: 26px;
    box-sizing: border-box;
    margin-bottom: 14px;
    font-size: 22px;
    padding-left: 15px;
  }
  
  #register-username {
    margin-top: 60px;
  } 
}