Bootstrap 4 Modal as Slideout Panel Sidebar

by Zaiste

HTML

<script src="//code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<link rel="stylesheet" href="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<div class="container demo">
  <div class="text-center">
    <button type="button" class="btn btn-demo" data-toggle="modal" data-target="#myModal">
			Left Sidebar Modal
		</button>

    <button type="button" class="btn btn-demo" data-toggle="modal" data-target="#myModal2">
			Right Sidebar Modal
		</button>
  </div>

  <!-- Modal -->
  <div class="modal left fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
    <div class="modal-dialog" role="document">
      <div class="modal-content">

        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
          <h4 class="modal-title" id="myModalLabel">Left Sidebar</h4>
        </div>

        <div class="modal-body">
          <p>Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua
            put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer
            farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
          </p>
        </div>

      </div>
      <!-- modal-content -->
    </div>
   ...

SCSS

.modal.left .modal-dialog,
	.modal.right .modal-dialog {
	  position: fixed;
	  margin: auto;
	  width: 320px;
	  height: 100%;
	  -webkit-transform: translate3d(0%, 0, 0);
	  -ms-transform: translate3d(0%, 0, 0);
	  -o-transform: translate3d(0%, 0, 0);
	  transform: translate3d(0%, 0, 0);
	}

	.modal.left .modal-content,
	.modal.right .modal-content {
	  height: 100%;
	  overflow-y: auto;
	}

	.modal.left .modal-body,
	.modal.right .modal-body {
	  padding: 15px 15px 80px;
	}

	/*Left*/

	.modal.left.fade .modal-dialog {
	  left: -320px;
	  -webkit-transition: opacity 0.3s linear, left 0.3s ease-out;
	  -moz-transition: opacity 0.3s linear, left 0.3s ease-out;
	  -o-transition: opacity 0.3s linear, left 0.3s ease-out;
	  transition: opacity 0.3s linear, left 0.3s ease-out;
	}

	.modal.left.fade.in .modal-dialog {
	  left: 0;
	}

	/*Right*/

	.modal.right.fade .modal-dialog {
	  right: -320px;
	  -webkit-transition: opacity 0.3s linear, right 0.3s ease-out;
	  -moz-transition: opacity 0.3s linear, right 0.3s ease-out;
	  -o-transition: opacity 0.3s linear, right 0.3s ease-out;
	  transition: opacity 0.3s linear, right 0.3s ease-out;
	}

	.modal.right.fade.in .modal-dialog {
	  right: 0;
	}

	.modal-content {
	  border-radius: 0;
	  border: none;
	}

	.modal-header {
	  border-bottom-color: #EEEEEE;
	  background-color: #FAFAFA;
	}

	body {
	  background-color: #78909C;
	}

	.demo {
	  padding-top: 60px;
	  padding-bottom: 110px;
	}

	.btn-demo {
	  margin: 15px;
	  padding: 10px 15px;
	  border-radius: 0;
	  font-size: 16px;
	  background-color: #FFFFFF;
	}

	.btn-demo:focus {
	  outline: 0;
	}