style.css

body {
  font-family: 'Arial', sans-serif;
  text-align: center;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.page {
  margin-top: 30px;
}

label {
  font-size: 1.2rem;
  margin-right: 10px;
}

input[type='number'] {
  font-size: 1.2rem;
  padding: 5px 10px;
  margin-right: 10px;
  width: 70px;
  border: 1px solid #ccc;
  border-radius: 3px;
  background-color: #f9f9f9;
}

button {
  font-size: 1.2rem;
  padding: 5px 10px;
  border: 1px solid #ccc;
  border-radius: 3px;
  background-color: #f9f9f9;
  cursor: pointer;
}

.square {
  background-color: white;
  border: 1px solid black;
}

.color {
  background-color: gray;
  border: 1px solid black;
}

.gridContainer {
  margin-top: 25px;
  margin-right: auto;
  margin-left: auto;
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  grid-template-rows: repeat(16, 1fr);
  border: 5px solid black;
  border-radius: 5px;
  height: 500px;
  width: 500px;
  padding: 8px;
}