style.css

h1 {
  text-align: center;
  color: black;
}

h2 {
  text-align: center;
  color: black;
}

p#warning {
  text-align: center;
  font-weight: bold;
  color: red;
}

.stRadio [role = radiogroup]{
  align-items: center;
  justify-content: center;
  font-size: 3rem !important;
}