.apr-layout {
    display: flex;
    gap: 20px;
}

.apr-left {
    flex: 3;
}

.apr-right {
    flex: 1;
    border-left: 1px solid #ddd;
    padding-left: 15px;
}

.apr-index div {
    padding: 8px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
}

.apr-index div:hover {
    background: #f0f0f0;
}

.apr-controls {
    margin-top: 10px;
}