.bd-placeholder-img {
    font-size: 1.125rem;
    text-anchor: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
  }

  @media (min-width: 768px) {
    .bd-placeholder-img-lg {
      font-size: 3.5rem;
    }
  }

  .b-example-divider {
    width: 100%;
    height: 3rem;
    background-color: rgba(0, 0, 0, .1);
    border: solid rgba(0, 0, 0, .15);
    border-width: 1px 0;
    box-shadow: inset 0 .5em 1.5em rgba(0, 0, 0, .1), inset 0 .125em .5em rgba(0, 0, 0, .15);
  }

  .b-example-vr {
    flex-shrink: 0;
    width: 1.5rem;
    height: 100vh;
  }

  .bi {
    vertical-align: -.125em;
    fill: currentColor;
  }

  .nav-scroller {
    position: relative;
    z-index: 2;
    height: 2.75rem;
    overflow-y: hidden;
  }

  .nav-scroller .nav {
    display: flex;
    flex-wrap: nowrap;
    padding-bottom: 1rem;
    margin-top: -1px;
    overflow-x: auto;
    text-align: center;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .btn-bd-primary {
    --bd-violet-bg: #712cf9;
    --bd-violet-rgb: 112.520718, 44.062154, 249.437846;

    --bs-btn-font-weight: 600;
    --bs-btn-color: var(--bs-white);
    --bs-btn-bg: var(--bd-violet-bg);
    --bs-btn-border-color: var(--bd-violet-bg);
    --bs-btn-hover-color: var(--bs-white);
    --bs-btn-hover-bg: #6528e0;
    --bs-btn-hover-border-color: #6528e0;
    --bs-btn-focus-shadow-rgb: var(--bd-violet-rgb);
    --bs-btn-active-color: var(--bs-btn-hover-color);
    --bs-btn-active-bg: #5a23c8;
    --bs-btn-active-border-color: #5a23c8;
  }

  .bd-mode-toggle {
    z-index: 1500;
  }

  .bd-mode-toggle .dropdown-menu .active .bi {
    display: block !important;
  }

 
  .dnabgground {
    background-position: center center;
    background-repeat: no-repeat;
    height: 200px;
    margin:0px 0 30px 0;
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
  }
  

    .devicegground {
    background-position: center center;
    background-repeat: no-repeat;
    height: 200px;
    margin:0px 0 30px 0;
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
  }

  .cellsysbground {
    background-position: center center;
    background-repeat: no-repeat;
  }
  @media (max-width: 480px) {
      .dnabgground {
      background-image: url('../img/sitetop480.jpg');    }
          .cellsysbground {
      background-image: url('../img/cellsys_logbg_bw.jpg');    }
                .devicegground {
      background-image: url('../img/device_monitoring_top.jpeg');    }
  }
  
  @media (min-width: 481px) and (max-width: 1024px) {
      .dnabgground {
      background-image: url('../img/sitetop1024.jpg');    }
          .cellsysbground {
      background-image: url('../img/cellsys_logbg_bw.jpg');    }
                      .devicegground {
      background-image: url('../img/device_monitoring_top.jpeg');    }
  }
  
  @media (min-width: 1025px) and (max-width: 1920px) {
      .dnabgground {
      background-image: url('../img/sitetop1920.jpg');   }
          .cellsysbground {
      background-image: url('../img/cellsys_logbg_bw.jpg');    }
                      .devicegground {
      background-image: url('../img/device_monitoring_top.jpeg');    }
  }
  @media (min-width: 1921px) {
      .dnabgground {
      background-image: url('../img/sitetop4k.jpg');
     }
         .cellsysbground {
      background-image: url('../img/cellsys_logbg_bw.jpg');    }
                      .devicegground {
      background-image: url('../img/device_monitoring_top.jpeg');    }
  }