.content_panel {
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    height: calc(100% - 60px);
    z-index: 500;
    background-color: #00004b;
    visibility: hidden;
    overflow: hidden;
}

.content_panel_header {
    width: 100%;
    text-align: center;
    font-family: arial;
    color: #00f1ff;
    font-size: 1.5rem;
    padding-top: 20px;
}

.content_subpanel {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    margin: auto;
    width: 100%;
    height: calc(100% - 70px);
    overflow-x: hidden;
    overflow-y: scroll;
    scrollbar-color: white rgba(0,100,255,0.5);
    scrollbar-width: thin;
    display: flex;
    justify-content: space-around;
    flex-direction: column;
    flex-wrap: nowrap;
    padding-top: 20px;
}

.content_subpanel_item {
    min-width: 80%;
    margin-left: auto;
    margin-right: auto;
    min-height: 450px;
    height: 450px;
    max-height: 450px;
    background-size: auto 100%;
    background-repeat: no-repeat;
    background-position: center;
    margin-bottom: 60px;
    position: relative;
    display: flex;
    justify-content: flex-start;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.content_subpanel_item > video{
    max-height: 100%;
}

.content_description {
    text-align: center;
    color: white;
    margin-top: -20px;
    font-family: arial;
    width: 254px;
    display: block;
    height: 20px;
    border-radius: 10px 10px 0 0;
    font-size: 15px;
}

.content_footer {
    position: absolute;
    bottom: -12px;
    height: 12px;
    width: 254px;
    border-radius: 0 0 10px 10px;
}

.enlarge_item {
    color: white;
    position: absolute;
    bottom: 5px;
    cursor: pointer;
}

.enlarge_item i {
    font-size: 22px;
}

.enlarge_item:hover{
    color: aqua;
}


/* --- WebKit (Chrome/Edge/Safari/Opera) --- */
.content_subpanel::-webkit-scrollbar {
  width: 10px;          /* vertical bar width */
  height: 10px;         /* horizontal bar height */
}

.content_subpanel::-webkit-scrollbar-track {
  background: transparent;  /* transparent track */
}

.content_subpanel::-webkit-scrollbar-thumb {
  background-color: dodgerblue;
  border-radius: 8px;
  /* create spacing from the track while keeping it transparent */
  border: 2px solid transparent;
  background-clip: padding-box;
}

.content_subpanel::-webkit-scrollbar-thumb:hover {
  filter: brightness(0.9);
}

.content_subpanel::-webkit-scrollbar-corner {
  bac