body {
    color: lightgray;
    background-color: black;
    font-family: sans-serif;
    padding: 10px;
}

th {
    color: black;
    background: black;
    background-color: gray;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th,
td {
    border: 1px solid #aaa;
    padding: 2px;
    text-align: center;
}

th {
    background: #eee;
}

input[type="text"] {
    width: 300px;
    padding: 4px;
    background-color: black;

}

button {
    margin-left: 5px;
    border: 2px solid gray;
}