/* Box Model Hack */
* {
    box-sizing: border-box;
  }
  
  /* Clear fix hack */
  .clearfix:after {
       content: ".";
       display: block;
       clear: both;
       visibility: hidden;
       line-height: 0;
       height: 0;
  }
  
  .clear {
      clear: both;
    }

/******************************************
/* BASE STYLES
/*******************************************/


/******************************************
/* LAYOUT
/*******************************************/

html{
    height: 100%;
    background: url(306.jpg);
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

body {
    font-family: "Arial", sans-serif;
}
section {
    text-align: center;
}
.game--container {
    display: grid;
    grid-template-columns: repeat(3, auto);
    width: 306px;
    margin: 50px auto;
}
.cell {
    font-family: "Permanent Marker", cursive;
    width: 100px;
    height: 100px;
    box-shadow: 0 0 0 1px #333333;
    border: 1px solid #333333;
    cursor: pointer;
line-height: 100px;
    font-size: 60px;
}

header{
    text-align: center;
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 50px;
}

header a{
    text-decoration: none;
    color: black;
}

button{
    background: rgba(0, 0, 0, 0);
    color: black;
    border: 0;
}

@media screen and (max-width: 600px) {
    header *{
        font-size: 15px;
    }   
}