body {
    background-color: #FFFFFF;
    color: #000000;
}

table {
    width: 50%;
    border: 1px solid;
    background-color: #FFFF99;
    margin: 0 auto;
}

input[type="text"] {
    width: 100%;
    padding: 6px;
    box-sizing: border-box;
}

input[type="submit"] {
    margin: 10px 0;
    padding: 10px 20px;
    color: #FFFFFF;
    background-color: #000000;
    border: none;
}