h1{
    text-align: center;
}

#content{
    margin: 0 auto;
    outline: 1px solid black;
    height: 640px;
    width: 640px;
}

.t11{
    background-color: green;
    width:32px;
    height:32px;
    float:left;
}

.t12{
    background-color: red;
    width:32px;
    height:32px;
    float:left;
}

.t13{
    background-color: blue;
    width:32px;
    height:32px;
    float:left;
}

.t10{
    width:32px;
    height:32px;
    float:left;
}


/*.tile, .t, .block, .b{width:32px;height:32px;float:left;background-repeat:no-repeat;}*/

/*
.t12{background-image:url(../img/tiles/DirtBlock.png);}*/