body {
    font-family: sans-serif;
    max-width: 640px;
    margin: 2rem auto;
    padding: 0 1rem;
    line-height: 1.6;
}

main {
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 1.5rem;
}

h1 {
    margin-top: 0;
}

a {
    color: #0066cc;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

th,
td {
    border: 1px solid #ccc;
    padding: 0.5rem;
    text-align: left;
}

th {
    background-color: #f5f5f5;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

button[type="submit"] {
    padding: 0.5rem 1.5rem;
    background-color: #0066cc;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button[type="submit"]:hover {
    background-color: #0052a3;
}

.alert-success {
    padding: 0.75rem;
    background-color: #e6f4ea;
    border: 1px solid #34a853;
    border-radius: 4px;
    color: #1e7e34;
}

.alert-error {
    padding: 0.75rem;
    background-color: #fce8e6;
    border: 1px solid #ea4335;
    border-radius: 4px;
    color: #c5221f;
    list-style: none;
    margin: 0 0 1rem;
    padding-left: 0.75rem;
}