body {
    display: flex;
    justify-content: center;
}

.input-mask {
    background-color: aquamarine;
    padding: 1em;
    text-align: center;
}

.list {
    padding: 1em;
    background-color: cadetblue;
    justify-content: center;
    display: flex;
    flex-direction: column;
}

table {
    border-collapse: collapse;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #f4f4f4;
}