Pen Settings



CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource


Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource


Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.


Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.


                <!--Source frome>
<form action="" >
  <div class="container">
    <h1>Form Đăng Ký</h1>
    <p>Xin hãy nhập biểu mẫu bên dưới để đăng ký.</p>

    <label for="email"><b>Email</b></label>
    <input type="text" placeholder="Nhập Email" name="email" required>

    <label for="psw"><b>Mật Khẩu</b></label>
    <input type="password" placeholder="Nhập Mật Khẩu" name="psw" required>

    <label for="psw-repeat"><b>Nhập Lại Mật Khẩu</b></label>
    <input type="password" placeholder="Nhập Lại Mật Khẩu" name="psw-repeat" required>

      <input type="checkbox" checked="checked" name="remember" style="margin-bottom:15px"> Nhớ Đăng Nhập

    <div class="clearfix">
      <button type="submit" class="signupbtn">Sign Up</button>


                @import url('');
* {box-sizing: border-box}
  font-family: 'Noto Sans JP', sans-serif;
h1, label{
  color: DodgerBlue;
/* Full-width input fields */
  input[type=text], input[type=password] {
  width: 100%;
  padding: 15px;
  margin: 5px 0 22px 0;
  display: inline-block;
  border: none;
  resize: vertical;
  box-shadow:4px 4px 10px rgba(0,0,0,0.2);

input[type=text]:focus, input[type=password]:focus {
  outline: none;

hr {
  border: 1px solid #f1f1f1;
  margin-bottom: 25px;

/* Set a style for all buttons */
button {
  background-color: #4CAF50;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border: none;
  cursor: pointer;
  width: 100%;
  opacity: 0.9;

button:hover {

/* Extra styles for the cancel button */
.cancelbtn {
  padding: 14px 20px;
  background-color: #f44336;

/* Float cancel and signup buttons and add an equal width */
.signupbtn {
  float: left;
  width: 100%;
  box-shadow:4px 4px 10px rgba(0,0,0,0.2);

/* Add padding to container elements */
.container {
  padding: 16px;

/* Clear floats */
.clearfix::after {
  content: "";
  clear: both;
  display: table;