body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 1rem;
}
table {
    width: 100%;
    border: 1px solid black;
    border-collapse: collapse;
}
th, td {
    border: 1px solid black;
    padding: .3rem;
}
.text-center {
    text-align: center;
}
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.error-box {
    background: #fdecea;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: .75rem 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
}
.empty {
    color: #555;
}
.login-wrap {
    max-width: 320px;
    margin: 4rem auto;
    padding: 1.5rem;
    border: 1px solid #ddd;
    border-radius: 8px;
}
.login-wrap h1 {
    margin-top: 0;
    font-size: 1.4rem;
}
.login-form label {
    display: block;
    margin: .6rem 0 .2rem;
}
.login-form input {
    width: 100%;
    padding: .5rem;
    box-sizing: border-box;
}
.login-form button {
    margin-top: 1rem;
    width: 100%;
    padding: .6rem;
    cursor: pointer;
}
.login-error {
    color: #721c24;
    background: #fdecea;
    border: 1px solid #f5c6cb;
    padding: .5rem;
    border-radius: 4px;
}