body {
  background-color: white;
  text-align: center;
  margin: 0px;
  font-family:'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}

#main-title {
  font-family:'Courier New', Courier, monospace;
  font-weight: bold;
  font-size: 100px;
  margin-bottom: 30px;
}

#intro {
  font-size: 30px;
  margin-top: 30px;
  margin-bottom: 30px;
}

.prompt {
  margin-bottom: 10px;
}

input {
  border-radius: 5px;
  margin-bottom: 20px;
}

#play-button {
  border-radius: 10px;
  font-family:'Courier New', Courier, monospace;
  font-weight: bold;
  font-size: 30px;
}

#empty {
  height: 60px;
}

#toolbar {
  margin-top: 20px;
  margin-bottom: 20px;
}

.tool {
  font-weight: bold;
  width: 150px;
  height: 30px;
  margin: 0 10px;
  border-radius: 10px;
}

#status {
  padding: 5px;
  font-size: 50px;
  margin-left: 25%;
  margin-right: 25%;
  margin-bottom: 30px;
}

.row-container {
  display: flex;
}

.board {
  margin-left: 25%;
  margin-right: 25%;
  border: 5px solid black;
  background-color: black;
}
  
.cell {
  width: 100%;
  border: 2px solid black;
  background-color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  aspect-ratio: 1 / 1;
}
  
.stone {
  width: 90%;
  height: 90%;
  border-radius: 50%;
}

.black {
  background-color: black;
}

.white {
  background-color: white;
}

.black-white {
  color: white;
  background-color: black;
  border: 3px solid black;
}

.white-black {
  color: black;
  background-color: white;
  border: 3px solid black;
}

img {
  width: 90%;
  height: 90%;
}