Add .active to a .list-group-item to indicate the current active selection.

• Cras justo odio
• Dapibus ac facilisis in
• Morbi leo risus
• Porta ac consectetur ac
• Vestibulum at eros

<!-- Basic -->
<ul class="list-group ">
    <li class="list-group-item">Cras justo odio</li>
    <li class="list-group-item active">Dapibus ac facilisis in</li>
    <li class="list-group-item">Morbi leo risus</li>
    <li class="list-group-item">Porta ac consectetur ac</li>
    <li class="list-group-item">Vestibulum at eros</li>
</ul>

Change all the li tags to a tags to convert it into a link

<!-- Links -->
<div class="list-group ">
    <a href="javascript:void(0);" class="list-group-item list-group-item-action">Cras justo odio</a>
    <a href="javascript:void(0);" class="list-group-item list-group-item-action active">Dapibus ac facilisis in</a>
    <a href="javascript:void(0);" class="list-group-item list-group-item-action">Morbi leo risus</a>
    <a href="javascript:void(0);" class="list-group-item list-group-item-action">Porta ac consectetur ac</a>
    <a href="javascript:void(0);" class="list-group-item list-group-item-action disabled">Vestibulum at eros</a>
</div>

• Messages

  4 New Messages

• Locations

  25 New Travel Locations

• Flexible

  Customization Flexibility

<!-- Icons -->
<ul class="list-group list-group-icons-meta">
    <li class="list-group-item list-group-item-action">
        <div class="media">
            <div class="d-flex mr-3">
                <svg> ... </svg>
            </div>
            <div class="media-body">
                <h6 class="tx-inverse">Messages</h6>
                <p class="mg-b-0">4 New Messages</p>
            </div>
        </div>
    </li>
    <li class="list-group-item list-group-item-action active">
        <div class="media">
            <div class="d-flex mr-3">
                <svg> ... </svg>
            </div>
            <div class="media-body">
                <h6 class="tx-inverse">Locations</h6>
                <p class="mg-b-0">25 New Travel Locations</p>
            </div>
        </div>
    </li>
    <li class="list-group-item list-group-item-action">
        <div class="media">
            <div class="d-flex mr-3">
                <svg> ... </svg>
            </div>
            <div class="media-body">
                <h6 class="tx-inverse">Flexible</h6>
                <p class="mg-b-0">Customization Flexibility</p>
            </div>
        </div>
    </li>
</ul>

• 

  Luke Ivory

  Project Lead

• 

  Sonia Shaw

  Web Designer

• 

  Dale Butler

  Developer

<!-- Images -->
<ul class="list-group list-group-media">
    <li class="list-group-item list-group-item-action">
        <div class="media">
            <div class="mr-3">
                <img alt="avatar" src="assets/img/profile-1.jpeg" class="img-fluid rounded-circle">
            </div>
            <div class="media-body">
                <h6 class="tx-inverse">Luke Ivory</h6>
                <p class="mg-b-0">Project Lead</p>
            </div>
        </div>
    </li>
    <li class="list-group-item list-group-item-action active">
        <div class="media">
            <div class="mr-3">
                <img alt="avatar" src="assets/img/profile-2.jpeg" class="img-fluid rounded-circle">
            </div>
            <div class="media-body">
                <h6 class="tx-inverse">Sonia Shaw</h6>
                <p class="mg-b-0">Web Designer</p>
            </div>
        </div>
    </li>
    <li class="list-group-item list-group-item-action ">
        <div class="media">
            <div class="mr-3">
                <img alt="avatar" src="assets/img/profile-3.jpeg" class="img-fluid rounded-circle">
            </div>
            <div class="media-body">
                <h6 class="tx-inverse">Dale Butler</h6>
                <p class="mg-b-0">Developer</p>
            </div>
        </div>
    </li>
</ul>

• List groups are a flexible and powerful component for displaying simple. Project
• List groups are a flexible and powerful component for displaying simple. Urgent
• List groups are a flexible and powerful component for displaying simple. Success

<!-- Task -->
<ul class="list-group task-list-group">
    <li class="list-group-item list-group-item-action">
        <div class="n-chk">
            <label class="new-control new-checkbox checkbox-primary w-100 justify-content-between">
              <input type="checkbox" class="new-control-input">
              <span class="new-control-indicator"></span>
                <span class="ml-2">
                    List groups are a flexible and powerful component for displaying simple.
                </span>
                <span class="ml-3 d-block">
                    <span class="badge badge-secondary">Project</span>
                </span>
            </label>
        </div>
    </li>
    <li class="list-group-item list-group-item-action active">
        <div class="n-chk">
            <label class="new-control new-checkbox checkbox-primary w-100 justify-content-between">
              <input type="checkbox" class="new-control-input">
              <span class="new-control-indicator"></span>
                <span class="ml-2">
                    List groups are a flexible and powerful component for displaying simple.
                </span>
                <span class="ml-3 d-block">
                    <span class="badge badge-primary">Urgent</span>
                </span>
            </label>
        </div>
    </li>
    <li class="list-group-item list-group-item-action">
        <div class="n-chk">
            <label class="new-control new-checkbox checkbox-primary w-100 justify-content-between">
              <input type="checkbox" class="new-control-input">
              <span class="new-control-indicator"></span>
                  <span class="ml-2">List groups are a flexible and powerful component for displaying simple.</span>
                  <span class="ml-3 d-block">
                      <span class="badge badge-success">Success</span>
                  </span>
            </label>
        </div>
    </li>
</ul>