@media screen and (min-width: 768px) and (max-width: 992px) {
  .row-offcanvas {
    position: relative;
    -webkit-transition: all 0.25s ease-out;
    -moz-transition: all 0.25s ease-out;
    transition: all 0.25s ease-out;
  }

  .row-offcanvas-right
  .sidebar-offcanvas {
    right: -400px; /* 6 columns */
  }

  .row-offcanvas-left
  .sidebar-offcanvas {
    left: -400px; /* 6 columns */
  }

  .row-offcanvas-right.active {
    right: 400px; /* 6 columns */
  }

  .row-offcanvas-left.active {
    left: 400px; /* 6 columns */
  }

  .sidebar-offcanvas {
    position: absolute;
    top: 0;
    width: 400px; /* 6 columns */
  }
}

@media screen and (max-width: 767px) {
  .row-offcanvas {
    position: relative;
    -webkit-transition: all 0.25s ease-out;
    -moz-transition: all 0.25s ease-out;
    transition: all 0.25s ease-out;
  }

  .row-offcanvas-right
  .sidebar-offcanvas {
    right: -300px; /* 6 columns */
  }

  .row-offcanvas-left
  .sidebar-offcanvas {
    left: -300px; /* 6 columns */
  }

  .row-offcanvas-right.active {
    right: 300px; /* 6 columns */
  }

  .row-offcanvas-left.active {
    left: 300px; /* 6 columns */
  }

  .sidebar-offcanvas {
    position: absolute;
    top: 0;
    width: 300px; /* 6 columns */
  }
}

.sidebar-offcanvas { position:absolute !important; }