fixed input-group-append input-group-text markup in login/register page

pages/examples/login.html

@@ -31,14 +31,18 @@
       <form action="../../index3.html" method="post">
         <div class="input-group mb-3">
           <input type="email" class="form-control" placeholder="Email">
-          <div class="input-group-append input-group-text">
+          <div class="input-group-append">
+            <div class="input-group-text">
               <span class="fas fa-envelope"></span>
+            </div>
           </div>
         </div>
         <div class="input-group mb-3">
           <input type="password" class="form-control" placeholder="Password">
-          <div class="input-group-append input-group-text">
+          <div class="input-group-append">
+            <div class="input-group-text">
               <span class="fas fa-lock"></span>
+            </div>
           </div>
         </div>
         <div class="row">

pages/examples/register.html

@@ -31,26 +31,34 @@
       <form action="../../index.html" method="post">
         <div class="input-group mb-3">
           <input type="text" class="form-control" placeholder="Full name">
-          <div class="input-group-append input-group-text">
+          <div class="input-group-append">
+            <div class="input-group-text">
               <span class="fas fa-user"></span>
+            </div>
           </div>
         </div>
         <div class="input-group mb-3">
           <input type="email" class="form-control" placeholder="Email">
-          <div class="input-group-append input-group-text">
+          <div class="input-group-append">
+            <div class="input-group-text">
               <span class="fas fa-envelope"></span>
+            </div>
           </div>
         </div>
         <div class="input-group mb-3">
           <input type="password" class="form-control" placeholder="Password">
-          <div class="input-group-append input-group-text">
+          <div class="input-group-append">
+            <div class="input-group-text">
               <span class="fas fa-lock"></span>
+            </div>
           </div>
         </div>
         <div class="input-group mb-3">
           <input type="password" class="form-control" placeholder="Retype password">
-          <div class="input-group-append input-group-text">
+          <div class="input-group-append">
+            <div class="input-group-text">
               <span class="fas fa-lock"></span>
+            </div>
           </div>
         </div>
         <div class="row">