body {
    background-color: aliceblue;
}

h1 {
    color: brown;
    text-align: center;
}

h2 {
    text-align: center;
}

header {
    background-color: lightslategray;
    border-bottom: 1px solid;
    color: white;
    padding: 16px;
    border-radius: 8px 8px 0 0;
}

header pre{
    text-align: center;
}

a {
    text-decoration: none;
}

p {
    font-size: 1em;
    text-indent: 1em;
    line-height: 1.7em;
}

table {
    border-collapse: collapse;
    width: 420px;
    height: 420px;
}

th, td {
    padding: 8px 14px;
    border: 1px solid;
}

th {
    background-color: cornflowerblue;
    color: blue;
    font-weight: bold;
}

td {
    background-color: lightyellow;
}

footer {
    background-color: lightslategray;
    color: darkblue;
    padding: 10px 15px;
}

textarea{
    width: 420px;
    height: 60px;
}

form{
    margin-left: 10px;
    margin-right: 10px;
    padding: 10px;
    margin-top: 10px;
}

.table-flex{
    display: flex;
    justify-content: center;
    gap: 120px;
}

.textarea-center{
    display: flex;
    flex-direction: column;
    align-items: center;
}