unified and simplified sign in form example

docs/examples/signin.html

@@ -29,32 +29,44 @@
       body {
         padding-top: 40px;
         padding-bottom: 40px;
-        background-color: #f5f5f5;
+        background-color: #eee;
       }
 
       .form-signin {
         max-width: 300px;
-        padding: 19px 29px 29px;
-        margin: 0 auto 20px;
-        background-color: #fff;
-        border: 1px solid #e5e5e5;
-        -webkit-border-radius: 5px;
-           -moz-border-radius: 5px;
-                border-radius: 5px;
-        -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.05);
-           -moz-box-shadow: 0 1px 2px rgba(0,0,0,.05);
-                box-shadow: 0 1px 2px rgba(0,0,0,.05);
+        padding: 30px;
+        margin: 0 auto;
       }
       .form-signin .form-signin-heading,
       .form-signin .checkbox {
         margin-bottom: 10px;
       }
+      .form-signin .checkbox {
+        font-weight: normal;
+      }
       .form-signin input[type="text"],
       .form-signin input[type="password"] {
+        position: relative;
         font-size: 16px;
         height: auto;
-        margin-bottom: 15px;
-        padding: 7px 9px;
+        padding: 10px;
+        -webkit-box-sizing: border-box;
+           -moz-box-sizing: border-box;
+                box-sizing: border-box;
+      }
+      .form-signin input[type="text"]:focus,
+      .form-signin input[type="password"]:focus {
+        z-index: 2;
+      }
+      .form-signin input[type="text"] {
+        margin-bottom: -1px;
+        border-bottom-left-radius: 0;
+        border-bottom-right-radius: 0;
+      }
+      .form-signin input[type="password"] {
+        margin-bottom: 10px;
+        border-top-left-radius: 0;
+        border-top-right-radius: 0;
       }
 
     </style>
@@ -68,12 +80,12 @@
 
       <form class="form-signin">
         <h2 class="form-signin-heading">Please sign in</h2>
-        <input type="text" class="input-block-level" placeholder="Email address">
+        <input type="text" class="input-block-level" placeholder="Email address" autofocus>
         <input type="password" class="input-block-level" placeholder="Password">
         <label class="checkbox">
           <input type="checkbox" value="remember-me"> Remember me
         </label>
-        <button class="btn btn-large btn-primary" type="submit">Sign in</button>
+        <button class="btn btn-large btn-primary btn-block" type="submit">Sign in</button>
       </form>
 
     </div> <!-- /container -->