.calculated {
    font-weight: bolder;
    text-align: center;
}

#result_container{
    margin-left: 10px;
    border: 2px dotted gray;
    min-width: 0px;
    min-height: 0px;
    position:relative
}
/*
.cell{background-color: #d9e1f2;}
.margin_top{background-color: #ffe699;}
.margin_left{background-color: #f4b084;}
.margin_right{background-color: #fce4d6;}
.margin_bottom{background-color: #fff2cc;}
*/