body {
  background-color: whitesmoke;
  font-family: system-ui, sans-serif;
  margin: 0;
  gap: 1 rem;
  align-items: start;
}

h1 {
  margin: 0.25rem 0 0.5rem;
  color: blue;
  font-size: 60px;
  line-height: 1;
}

.sidebar {
  top: 1rem;
  align-self: start;
  padding: 1rem;
  background: #f5f5f5;
  border-radius: 8px;
  font: system-ui, sans-serif;
  font-size: 11px;
}

.board {
  display: flex;
  flex-wrap: wrap;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 325px;
  margin:  1rem auto;
}


.sqr {
  width: 20%; 
  box-sizing: border-box; 
  aspect-ratio: 1/1;
  border: 3px solid black;
  font-size: 64px;
  text-align: center;
}


.placeholder{
  opacity: 0.3;
}

#reset {
  background-color: blue;
  color: white;
  display: block; 
  justify-self: center;
  font-size: 20px;
  margin-top: 0.5rem;
  
}

#message{
  margin-left: 300px ;
  font-size: 25px;

}

h1 {
  color: blue;
  font-size: 60px;
  justify-self: center;
}