/*
 * Style tweaks
 * --------------------------------------------------
 */
body {
  padding-top: 70px;
}
footer {
  padding-left: 15px;
  padding-right: 15px;
}

/*
 * Off Canvas
 * --------------------------------------------------
 */
@media screen and (max-width: 768px) {
  .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: -50%; /* 6 columns */
  }

  .row-offcanvas-left
  .sidebar-offcanvas {
    left: -50%; /* 6 columns */
  }

  .row-offcanvas-right.active {
    right: 50%; /* 6 columns */
  }

  .row-offcanvas-left.active {
    left: 50%; /* 6 columns */
  }

  .sidebar-offcanvas {
    position: absolute;
    top: 0;
    width: 50%; /* 6 columns */
  }
}

/*
 * Style tweaks
 * --------------------------------------------------
 */
body {
  padding-top: 70px;
}
footer {
  padding-left: 15px;
  padding-right: 15px;
}

/*
 * Off Canvas
 * --------------------------------------------------
 */
@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: -50%; /* 6 columns */
  }

  .row-offcanvas-left
  .sidebar-offcanvas {
    left: -50%; /* 6 columns */
  }

  .row-offcanvas-right.active {
    right: 50%; /* 6 columns */
  }

  .row-offcanvas-left.active {
    left: 50%; /* 6 columns */
  }

  .sidebar-offcanvas {
    position: absolute;
    top: 0;
    width: 50%; /* 6 columns */
  }
}

Make custom max-width on row conform to Boostrap convention
Make custom max-width on row conform to Boostrap convention

Bootstrap break point for tablet portrait 768 keeps the row intact, so it's not appropriate to have off-canvas elements at that width. Custom off-canvas.css should be breakpoint 767px