Back buttons acualy go back to previous page instad of a static page

Unnecessary Enters removed

backend/view-system.php

@@ -216,7 +216,7 @@ if(isset($_GET["sysID"]) && !empty(trim($_GET["sysID"]))){
                                 <!-- CONTENT -->
                                 <div class="clearfix" style="background:white; padding:20px;">
                                     <div class="toolbar crud pull-left">
-                                        <a href="systems.php" class="btn btn-secondary btn-fab"><i class="icon-arrow-left"></i></a>
+                                        <button class="headbnt btn btn-secondary btn-fab icon icon-arrow-left" onclick="window.history.back();"></button>
                                         <?php
 
        echo "<a class=' btn btn-warning btn-fab'  href='edit-system.php?id=". $row['id'] ."'><span class='icons icon-pencil'></span></a>";