/* 自定义样式 */
body {
    background-color: #f5f5f5;
}

.card {
    border: none;
    border-radius: 10px;
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid rgba(0,0,0,.1);
}

.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,.1);
}

footer {
    opacity: 0.6;
}