*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}
 body{
     background: #002339;
    color: #fff;
 }

 .container{
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
 }

 .container h1{
    margin:0 0 20px 0;
    font-size: 3rem;
	font-family:cursive;
 }

 .game-board{
    display: grid;
    grid-template-columns: repeat(3, minmax(120px, 1fr));
 }


.cell{
    border: 2px solid #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    font-size: 30px;
    font-weight: 600;
    height: 100px;
    cursor: pointer;
}

.game-players{
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}
.player{
    margin-inline: 18px;
    font-size: 24px;
    font-weight: 600;
}


.restartBtn{
    border: none;
   background: #019f55;
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    margin-block: 18px;
    padding: 10px 30px;
    border-radius: 4px;
    cursor: pointer;
}

.restartBtn:hover{
     background-color: #7272e1;
}

.disabled{
    background-color: #8c8c8c;
}


.alertBox{
position: absolute;
top:0;
background: #019f55;
color: #4d4b51;
width: 100%;
padding: 8px 12px;
font-size: 20px;
font-weight: 600;
height: 40px;
display: none;
}

footer {
  text-align: center;
  color: white;
  font-size: 1rem;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin-bottom: 0;
  padding: 5px;
}

footer a:visited {
  color: inherit;
}



@media screen and (max-width:550px){
    .container h1{
       font-size: 24px;
    }
    .game-board{
        grid-template-columns: repeat(3, minmax(90px, 1fr));
    }

    .cell{
        height: 90px;
        font-size: 50px;
    }

}