body, html {
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
  text-align: center;
  background-color: #fafafa;
}

.container {
  text-align: center;
  margin-top: 80px;
  padding: 0 20px;
}

.grid {
  border-collapse: collapse;
  margin: 20px auto;
  background-color: #fff;
  width: 100%;
  max-width: 500px;
  overflow-x: auto;
}

.grid td {
  width: 50px;
  height: 50px;
  border: 1px solid #333;
  text-align: center;
  vertical-align: middle;
  font-size: 18px;
}

.options {
  margin: 30px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

button, select {
  padding: 10px;
  margin: 5px;
  font-size: 1.1rem;
  font-family: Poppins, sans-serif;
  background-color: #fff;
  color: #000;
  border: 1px solid #ccc;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
  height: 40px; 
  display: inline-flex; 
  align-items: center; 
}

button:hover, select:hover, button:focus, select:checked {
  background-color: #EDF4FF;
}

select {
  appearance: none;
}

select:focus {
  outline: none;
  border-color: #ccc; 
}

.highlight {
  background-color: #c691f5;
}

@media (max-width: 768px) {

  .grid td {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  button, select {
    font-size: 1rem;
    padding: 8px;
    height: 35px;
  }
}

@media (max-width: 480px) {

  .grid td {
    width: 30px;
    height: 30px;
    font-size: 14px;
  }

  button, select {
    font-size: 0.9rem;
    padding: 6px;
    height: 30px;
  }
}