body {
    background-color: #f0f0f5;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.container {
    max-width: 600px;
    margin: auto;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
    background-color: white;
}

.window {
    border-radius: 10px;
    border: 1px solid #ccc;
    overflow: hidden;
    background-color: white;
}

.window-header {
    display: flex;
    align-items: center;
    padding: 5px 10px;
    background-color: #e1e1e1;
    border-bottom: 1px solid #ccc;
}

.mac-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 5px;
    display: inline-block;
}

.window-content {
    padding: 20px;
}

h1 {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 20px;
}

.form-select,
.form-control {
    border-radius: 5px;
    margin-bottom: 10px;
}

.btn-block {
    width: 100%;
}