.submit-form {
  max-width: 400px;
  margin: auto;
}

mat-card{
  margin: 20px;
}
mat-card-title{
  color: cyan;
}

.example-form {
  min-width: 150px;
  max-width: 500px;
  width: 100%;
}

.example-full-width {
  width: 100%;
}