<div class="task-plagiarism-report-viewer">
  <div>
    <div class="large-notice-block" ng-show="noPlagiarismDetected()">
      <i class="fa fa-eye fa-2x"></i>
      <p>Doubtfire has detected no similarities for this work</p>
    </div><!--/no-detections-->
    <div ng-if="task.similar_to_count > 0 && similarityData">
      <div ng-class="classForViews()">
        <task-plagiarism-file-viewer match="similarityData.student"></task-plagiarism-file-viewer>
      </div>
      <div ng-class="classForViews()">
        <task-plagiarism-file-viewer match="similarityData.other_student"></task-plagiarism-file-viewer>
      </div>
    </div>
    <button ng-if="canSendEmail" ng-click="emailStudentsPlagiarism()" class="btn btn-primary btn-block">
      Email Students
    </button>
  </div>
  <div ng-show="task.similar_to_count > 1">
    <pagination ng-show="task.similar_to_count > 1" total-items="task.similar_to_count" ng-model="match" items-per-page="1" max-size="5" class="pagination-sm" boundary-links="true" rotate="false"></pagination>
  </div>
</div>

<div class="task-plagiarism-report-viewer">
  <div>
    <div class="large-notice-block" ng-show="noPlagiarismDetected()">
      <i class="fa fa-eye fa-2x"></i>
      <p>Doubtfire has detected no similarities for this work</p>
    </div><!--/no-detections-->
    <div ng-if="task.similar_to_count > 0 && similarityData">
      <div ng-class="classForViews()">
        <task-plagiarism-file-viewer match="similarityData.student"></task-plagiarism-file-viewer>
      </div>
      <div ng-class="classForViews()">
        <task-plagiarism-file-viewer match="similarityData.other_student"></task-plagiarism-file-viewer>
      </div>
    </div>
    <div class="col-sm-12 text-right">
      <button ng-if="canSendEmail" ng-click="emailStudentsPlagiarism()" class="btn btn-primary">
        <i class="fa fa-envelope"></i> Email Students
      </button>
    </div>
  </div>
  <div ng-show="task.similar_to_count > 1">
    <pagination ng-show="task.similar_to_count > 1" total-items="task.similar_to_count" ng-model="match" items-per-page="1" max-size="5" class="pagination-sm" boundary-links="true" rotate="false"></pagination>
  </div>
</div>

Change size and postition of button
LOOKS: Change size and postition of button
