*, html {
    margin: 0;
    padding: 0;
}
.container {
    position: relative;
    max-width: 1140px;
    margin: 0 auto;
    padding: 50px;
}

tr, td {
    border: 1px solid black;
    width: 20px;
    height: 20px;
    text-align: center;
}
.tr {
    background-color: blanchedalmond;
}