body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  font-family: Arial, sans-serif;
  font-size: 25px;
}

.container {
  text-align: center;
  padding: 20px;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  background-color: #f9f9f9;
  width: 700px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
}

form div {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
}

form label {
  min-width: 100px;
  text-align: right;
}

form button {
  font-size: 25px;
  padding: 10px 20px;
  width: 150px;
  border: none;
  border-radius: 5px;
  background-color: lightgray;
  cursor: pointer;
}

form button:hover {
  background-color: darkgray;
}

form input {
  font-size: 18px;
  padding: 10px;
  width: 100%;
  max-width: 400px;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-sizing: border-box;
}

form select {
  font-size: 18px;
  padding: 10px;
  width: 100%;
  max-width: 400px;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-sizing: border-box;
}

input[type="checkbox"] {
  transform: scale(1.5);
  margin: 10px;
}

input[type='checkbox']:checked {
  background: #abd;
}

input.valid {
  box-shadow: 0 0 0 2px #22c55e;
}

input.invalid {
  box-shadow: 0 0 0 2px #ef4444;
}

input:focus-visible {
  outline: 2px solid #3b82f6;
}

input.valid:focus-visible {
  outline-color: #22c55e;
}

input.invalid:focus-visible {
  outline-color: #ef4444;
}