/* Set to a4 size */
.pdf-viewer-wrapper {
    width: 100%;
    height: 874px;
    border: 1px solid #D9D9D9;
}
#viewer-container {
    overflow: auto;
    width: 100%;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

#viewer-container::-webkit-scrollbar,
.navigation-menus::-webkit-scrollbar{
    width:0;
}

#viewer-container .pdf-pages {
    background: #525659;
}

.navigation-menus {
    height: 100%;
    overflow-y: auto;
}
.navigation-menus .item.has-submenu .trigger-node .collapsed{
    transform: rotate(0);
    transition: transform 0.5s ease-in-out;
}

.navigation-menus .item.has-submenu .trigger-node .expand{
    transform: rotate(180deg);
    transition: transform 0.5s ease-in-out;
}