* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: gray;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  font-weight: bold;
  color: white;
  background-color: #e74c3c;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin: 20px 0 20px 0;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover {
  background-color: #c0392b;
  transform: scale(1.05);
}

button:active {
  transform: scale(0.95);
}


.container {
    width: 960px;
    height: 960px;
    display: flex;
    flex-wrap: wrap;
}

.square {
    border: 1px solid black;
    width: 60px;
    height: 60px;
    background-color: whitesmoke;
}
.hover-state {
    background-color: greenyellow;
}