.pep-app {
    font-family: sans-serif;
    padding: 20px;
    background: #f9f9f9;
    border: 1px solid #ddd;
}
.pep-app input {
    display: block;
    margin-bottom: 10px;
    padding: 5px;
}
.pep-app button {
    padding: 6px 12px;
    background-color: #0073aa;
    color: #fff;
    border: none;
    cursor: pointer;
}
.pep-app button:hover {
    background-color: #005c8a;
}