/* Flex container that holds the two columns */
.video-container
{
   display: flex;
   height: 75vh;               /* limit both sides by page height */
   overflow: hidden;           /* prevent outer scrollbars */
}

/* Left column – the list */
.sidebar
{
   flex: 0 0 260px;             /* fixed width (adjust as you like) */
   background: #f0f0f0;
   border-right: 1px solid #ddd;
   padding: 1rem;
   box-sizing: border-box;
   overflow-y: auto;            /* scroll if list gets long */
}

.sidebar a
{
   display: block;
   color: #0066cc;
   text-decoration: none;
   margin: 0.4rem 0;
   cursor: pointer;
}

.sidebar a:hover
{
   text-decoration: underline;
}

/* Right column – the video player */
.main
{
   flex: 1;                     /* take the remaining width */
   display: flex;
   align-items: center;         /* vertically center the player */
   justify-content: center;
   padding: 1rem;
   box-sizing: border-box;
   overflow: hidden;
}

video
{
   max-width: 100%;
   max-height: 100%;            /* keep within the column height */
   border: 1px solid #ccc;
}

@media screen and (max-width: 999.99px)
{
   .full-screen
   {
      display: none;
   }

   .limited-screen
   {
   }
}

@media screen and (min-width: 1000px)
{
   .full-screen
   {
   }

   .limited-screen
   {
      display: none;
   }
}