body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: #f4f4f4;
  padding: 20px;
}
.container {
  background: white;
  padding: 20px;
  /* width: 320px; */
  margin: auto;
  border-radius: 10px;
  box-shadow: 0px 0px 10px #ddd;
}
h2 {
  margin-bottom: 20px;
}
.register input {
  width: 100%;
  padding: 10px;
  /* margin: 5px 0; */
  border: 1px solid #ddd;
  border-radius: 5px;
  margin-bottom: 10px !important;
}

.btn{
  padding: 0.375rem 3rem;
}
button {
  background: green;
  color: white;
  padding: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
button:hover {
  background: darkgreen;
}
.error {
  color: red;
  margin-bottom: 10px;
}
.register .row{
  justify-content: center;
}