html {
  height: 100%;
  width: 100%;
}
form {
  display: flex;
  flex-direction: column;
  width: 400px;
}

label {
  margin-bottom: 0.5em;
}

input, select {
  padding: 5px;
  margin-bottom: 1em;
}

button {
  padding: 10px;
  width: 100px;
  align-self: flex-end; 
}