.scroll-wrapper {
      position: relative;
      height: 90vh;
      width: 100%;
      display: flex;
      padding: 1rem;
      box-sizing: border-box;
       -ms-overflow-style: none; /* for Internet Explorer, Edge */
        scrollbar-width: none; /* for Firefox */
    }

    .scrollable-col {
      flex: 1;
      overflow-y: scroll;
      scrollbar-width: none; /* Firefox */
      -ms-overflow-style: none;  /* IE y Edge */
    }

    .scrollable-col::-webkit-scrollbar {
      display: none; /* Chrome, Safari */
    }

    .custom-scrollbar {
      width: 10px;
      background: rgba(255, 255, 200, 0.2);
      margin-left: 4px;
      border-radius: 5px;
      position: relative;
    }

    .custom-thumb {
      background: #FEFFAA;
      width: 100%;
      border-radius: 4px;
      position: absolute;
      top: 0;
      height: 40px; /* se ajusta dinámicamente */
    }

    .content {
      height: 1500px;
      background: linear-gradient(#eee, #ccc);
      padding: 1rem;
      box-sizing: border-box;
    }
    .scrollable-col {
      flex: 1 !important;
      overflow-y: scroll !important;

      /* Ocultar scrollbar nativa: */
      scrollbar-width: none !important;        /* Firefox */
      -ms-overflow-style: none !important;     /* IE y Edge */
    }

    .scrollable-col::-webkit-scrollbar {
      display: none !important;                /* Chrome, Safari y derivados */
    }

  @media screen and (max-width: 500px) {
    .hero-presenta{
      height: 50vh;
    }
    #convocatorias-abiertas h4{
      text-align: center;
    }
    #convocatorias-abiertas a{
      line-height: 1.8rem;
      font-size: 1.5rem;
    }
    #convocatorias-abiertas a img{
      top:0px;
    }
    .circle-presenta{
          margin-bottom: 1rem;
    }
  }