.slider-container {
    position: relative;
    max-width: 600px;
    margin: 20px auto;
}
.main-image {
    position: relative;
}
.main-image img {
    width: 100%;
    height: auto;
    transition: opacity 0.3s ease;
}
.arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
    z-index: 10;
    font-size: 20px;
}
.arrow.left {
    left: 10px;
}
.arrow.right {
    right: 10px;
}
.thumbnails {
    display: flex;
    justify-content: center;
    margin-top: 10px;
    flex-wrap: wrap;
}
.thumbnails img {
    width: 80px;
    height: auto;
    margin: 5px;
    cursor: pointer;
    opacity: 0.6;
    border: 2px solid transparent;
    transition: all 0.3s;
}
.thumbnails img.active,
.thumbnails img:hover {
    opacity: 1;
    border-color: #0073aa;
}