#art{display: table;
border-spacing: 1px;
background-color: black;
border: 1px solid black;}
.row {    display: table-row;}
    
.pixel { 
    display: table-cell; 
    background-color: white;
    width: 40px;
    height: 40px;}
    .pen{
        display:inline-block;
        width: 40px;
        height: 40px;
        border: 2px solid black;
    }
    .pen{
        display:inline-block;
        width: 40px;
        height: 40px;
        border: 2px solid rgb(0, 0, 0);
    }