#publishedpapers img { 
    width: 250px
}

@media screen and (max-width: 769px) {
    .dropdown-item {
        margin-left: 10px;
    }
}

.video-sub-dropdown-item {
    display: block;
    padding: 0.4rem 0;
    margin-left: 20px;
    white-space: nowrap; 
    color: var(--color-white);
}

.video-sub-dropdown-item:hover {
    color: var(--color-default);
}

.video-dropdown-wrapper {
    position: relative;
    display: inline-block;
}

.sub-links {
    position: absolute;
    top: 100%;
    background: #00205B;
    height: 180px;
    opacity: 0;
    visibility: hidden;
    min-width: 320px;
    left: 0px;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
    pointer-events: none;
    z-index: 10;
}

.video-dropdown-wrapper:hover > .sub-links {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}