body{
    /*background-color: rgb(100, 97, 92);*/
    /*background-image: linear-gradient(to bottom, red,orange,yellow,green,blue,indigo,violet);*/
    background-color: white;
    padding-top: 50px;
}

/*
check
*/
.green03{
    /*background-color: gray;*/
    width: auto;
    height: auto;
}
.red03:hover, .green03 :hover, .Empty :hover, .bg_class :hover {
        background-color: gray;
}

/*
check
*/

.square img{
    border-radius: 30%;
    image-rendering: crisp-edges;
    max-width: 20px;
    box-shadow: 1px 3px 3px wheat;
    /* transform: scale(1.5); */
}


.centercontent01{    
    display: flex;
    justify-content: center;
}

.menu01{   
    background-color: white;
}
.play_content{   
    /*background-color: white;*/
    background-image: linear-gradient(135deg, red,orange,yellow,green,blue,indigo,violet);
    padding: 10px;
    border-radius: 5px;
}
.play_area{    
    min-height: 100px;
    max-height: 900px;
    min-width: 100px;
    max-width: 900px;
    background-color: whitesmoke;
    border-radius: 5px;    
    display: flex;
    justify-content: center;
    box-shadow: 1px 1px 13px black;
}
.square{
    width: 300px;
    height: 300px;    
    display: flex;
    justify-content: center;
    transform: scale(1.2);
}
.table01{
    display: flex;
    justify-content: center;
}
.table01 table{
    align-self: center;
    color: white;
    background-color: whitesmoke;    
    border: 10px solid;
    border-color: black;
    border-radius: 5px;
}
.table01 table tr{
    width: 90px;
    height: 90px;
    border: 1px solid;
    border-color: black;
}
.table01 table tr td{
    width: 90px;
    height: 90px;
    border: 10px solid;
    border-color: black;
}
.diagonalCross2 {
    opacity: 0.9;
    /* filter: invert(); */
}
.diagonalCross3 {
    opacity: 0.9;
    /* filter: invert(); */
}
/*
.diagonalCross2 {
    background: linear-gradient(to top right, #fff calc(50% - 5px), black , #fff calc(50% + 5px) )
  }
.diagonalCross3 {
    background: linear-gradient(to top left, #fff calc(50% - 5px), black , #fff calc(50% + 5px) )
  }
  */