.slider {
    width: 50px;
    height: calc(100vh - 60px);
    background-color: rgba(0,0,0,0.1);
    backdrop-filter: blur(3px);
    position: fixed;
    top: 60px;
    left: 0;
    transition: width 0.3s;
    overflow: hidden;
    z-index: 999;
}

.slider:hover {
    width: 200px;
    overflow-y: auto;
}

.slider-list {
    list-style: none;
    padding: 0;
    margin: 0;
    opacity: 0;
    transition: opacity 0.3s;
}

.slider:hover .slider-list {
    opacity: 1;
}

.slider-list li {
    padding: 5px;
    text-align: center;
}

.slider-list button {
    width: 150px;
    border-radius: 5px;
    padding: 5px;
    border: none;
    cursor: pointer;
    background: rgba(255,255,255,0.15);
    color: white;
}

.slider-list button:hover {
    background: rgba(255,255,255,0.25);
} 

.slider-list img {
    width: 40px;
    height: 40px;
    border-radius: 5px;
}

@media (max-width: 768px) {
    .slider {
        display: none;
    }
}