body{
    text-align: center;
}

.start-btn{
    padding: 1vw;
    font-size: 2vw;
    border-radius: 1vw;
    border: none;
    background-color: #f99b45;
    color: white;
    cursor: pointer;
}

.btn{
    height: 20vw;
    width: 20vw;
    border-radius: 20%;
    border: 1vw solid black;
    margin: 2vw;
}

.button-container{
    display: flex;
    flex-direction: wrap;
    justify-content: center;
    gap: 2vw;
}

.red{
    background-color: #d95980;
}

.green{
    background-color: #63aac0;
}

.yellow{
    background-color: #f99b45;
}

.purple{
    background-color: #d19ff9;
}

.flash{
    background-color: white;
}


@media (max-width: 600px) {
  .btn {
    width: 40vw;
    height: 40vw;
    margin: 3vw;
  }
  .start-btn{
    padding: 1vw;
    font-size: 2vw;
    padding: 2vw;
    font-size: 4vw;
    border-radius: 2vw;
    border: none;
    background-color: #f99b45;
    color: white;
    cursor: pointer;
  }
} 

h1 {
  font-size: 4vw; /* scales with viewport width */
  margin-bottom: 1rem;
}

h2 {
  font-size: 2.5vw;
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  h1 {
    font-size: 6vw;
  }

  h2 {
    font-size: 4vw;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 8vw;
  }

  h2 {
    font-size: 5vw;
  }
}

h1 {
  font-size: clamp(1.5rem, 5vw, 3rem);
}

h2 {
  font-size: clamp(1rem, 3vw, 2rem);
}