body {
    background-color: whitesmoke;
    direction: rtl;
}

.main {
    width: 400px;
    height: auto;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}
.tbl {
    width: 400px;
    height: auto;
    background-color: yellowgreen;
    border: 1px solid red;
    border-spacing: 1px;
}
