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Bootstrap Forms:

Bootstrap Form with Animated Background

This is quite apparent that no one prefers a blank and boring website to a nicely coloured, well-designed one. the colour palette you use for your website has more effect than you think. You need to think a lot more before you pick a style for your site. If your website is headache inducing, the visitors will instantly be thinking of finding the exit button to leave your page. On the other hand, if you have a harmonious website which is aesthetically pleasing to the eye, the visitors will be far more likely to explore more of your pages. Of course, too much effects can distract the visitors from the main content which is also a problem. This is why you need to apply the right amount of effects and animations in every page and every element and feature you add to your website.

In this post we have a perfect dynamic form to use as a login form. A login form needs to be inviting and interesting. The input fields in this Bootstrap login form is transparent and has a glass look to it so you can easily see the background. This is good because the code also features an animated background. When you select a box, it becomes solid so you can type in the required information correctly. When you click the login button in this Bootstrap CSS form, a welcome message will appear. All the animations in this form are really smooth and give you a warm inviting welcome.

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Dynamic Form

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Bootstrap Login Form

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Login Form

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Bootstrap CSS Form


<!-- This script got from frontendfreecode.com -->
<div class="wrapper">
    <div class="container">
        <h1>Welcome</h1>
        <form class="form">
            <input type="text" placeholder="Username">
            <input type="password" placeholder="Password">
            <button type="submit" id="login-button">Login</button>
        </form>
    </div>
    <ul class="bg-bubbles">
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>
</div><a style="font-size: 8pt; text-decoration: none" target="_blank" href="http://frontendfreecode.com">Free Frontend</a>
                                                                            
@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:200,300);
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-weight: 300;
}
body {
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  font-weight: 300;
}
body ::-webkit-input-placeholder {
  /* WebKit browsers */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  font-weight: 300;
}
body :-moz-placeholder {
  /* Mozilla Firefox 4 to 18 */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  opacity: 1;
  font-weight: 300;
}
body ::-moz-placeholder {
  /* Mozilla Firefox 19+ */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  opacity: 1;
  font-weight: 300;
}
body :-ms-input-placeholder {
  /* Internet Explorer 10+ */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  font-weight: 300;
}
.wrapper {
  background: #50a3a2;
  background: -webkit-linear-gradient(top left, #50a3a2 0%, #53e3a6 100%);
  background: linear-gradient(to bottom right, #50a3a2 0%, #53e3a6 100%);
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 400px;
  margin-top: -200px;
  overflow: hidden;
}
.wrapper.form-success .container h1 {
  -webkit-transform: translateY(85px);
          transform: translateY(85px);
}
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 80px 0;
  height: 400px;
  text-align: center;
}
.container h1 {
  font-size: 40px;
  -webkit-transition-duration: 1s;
          transition-duration: 1s;
  -webkit-transition-timing-function: ease-in-put;
          transition-timing-function: ease-in-put;
  font-weight: 200;
}
form {
  padding: 20px 0;
  position: relative;
  z-index: 2;
}
form input {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  outline: 0;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background-color: rgba(255, 255, 255, 0.2);
  width: 250px;
  border-radius: 3px;
  padding: 10px 15px;
  margin: 0 auto 10px auto;
  display: block;
  text-align: center;
  font-size: 18px;
  color: white;
  -webkit-transition-duration: 0.25s;
          transition-duration: 0.25s;
  font-weight: 300;
}
form input:hover {
  background-color: rgba(255, 255, 255, 0.4);
}
form input:focus {
  background-color: white;
  width: 300px;
  color: #53e3a6;
}
form button {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  outline: 0;
  background-color: white;
  border: 0;
  padding: 10px 15px;
  color: #53e3a6;
  border-radius: 3px;
  width: 250px;
  cursor: pointer;
  font-size: 18px;
  -webkit-transition-duration: 0.25s;
          transition-duration: 0.25s;
}
form button:hover {
  background-color: #f5f7f9;
}
.bg-bubbles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.bg-bubbles li {
  position: absolute;
  list-style: none;
  display: block;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.15);
  bottom: -160px;
  -webkit-animation: square 25s infinite;
  animation: square 25s infinite;
  -webkit-transition-timing-function: linear;
  transition-timing-function: linear;
}
.bg-bubbles li:nth-child(1) {
  left: 10%;
}
.bg-bubbles li:nth-child(2) {
  left: 20%;
  width: 80px;
  height: 80px;
  -webkit-animation-delay: 2s;
          animation-delay: 2s;
  -webkit-animation-duration: 17s;
          animation-duration: 17s;
}
.bg-bubbles li:nth-child(3) {
  left: 25%;
  -webkit-animation-delay: 4s;
          animation-delay: 4s;
}
.bg-bubbles li:nth-child(4) {
  left: 40%;
  width: 60px;
  height: 60px;
  -webkit-animation-duration: 22s;
          animation-duration: 22s;
  background-color: rgba(255, 255, 255, 0.25);
}
.bg-bubbles li:nth-child(5) {
  left: 70%;
}
.bg-bubbles li:nth-child(6) {
  left: 80%;
  width: 120px;
  height: 120px;
  -webkit-animation-delay: 3s;
          animation-delay: 3s;
  background-color: rgba(255, 255, 255, 0.2);
}
.bg-bubbles li:nth-child(7) {
  left: 32%;
  width: 160px;
  height: 160px;
  -webkit-animation-delay: 7s;
          animation-delay: 7s;
}
.bg-bubbles li:nth-child(8) {
  left: 55%;
  width: 20px;
  height: 20px;
  -webkit-animation-delay: 15s;
          animation-delay: 15s;
  -webkit-animation-duration: 40s;
          animation-duration: 40s;
}
.bg-bubbles li:nth-child(9) {
  left: 25%;
  width: 10px;
  height: 10px;
  -webkit-animation-delay: 2s;
          animation-delay: 2s;
  -webkit-animation-duration: 40s;
          animation-duration: 40s;
  background-color: rgba(255, 255, 255, 0.3);
}
.bg-bubbles li:nth-child(10) {
  left: 90%;
  width: 160px;
  height: 160px;
  -webkit-animation-delay: 11s;
          animation-delay: 11s;
}
@-webkit-keyframes square {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  100% {
    -webkit-transform: translateY(-700px) rotate(600deg);
            transform: translateY(-700px) rotate(600deg);
  }
}
@keyframes square {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  100% {
    -webkit-transform: translateY(-700px) rotate(600deg);
            transform: translateY(-700px) rotate(600deg);
  }
}
$("#login-button").click(function (event) {
    event.preventDefault();
    $('form').fadeOut(500);
    $('.wrapper').addClass('form-success');
});
<script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<!-- This script got from frontendfreecode.com -->

<script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<style>
@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:200,300);
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-weight: 300;
}
body {
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  font-weight: 300;
}
body ::-webkit-input-placeholder {
  /* WebKit browsers */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  font-weight: 300;
}
body :-moz-placeholder {
  /* Mozilla Firefox 4 to 18 */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  opacity: 1;
  font-weight: 300;
}
body ::-moz-placeholder {
  /* Mozilla Firefox 19+ */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  opacity: 1;
  font-weight: 300;
}
body :-ms-input-placeholder {
  /* Internet Explorer 10+ */
  font-family: 'Source Sans Pro', sans-serif;
  color: white;
  font-weight: 300;
}
.wrapper {
  background: #50a3a2;
  background: -webkit-linear-gradient(top left, #50a3a2 0%, #53e3a6 100%);
  background: linear-gradient(to bottom right, #50a3a2 0%, #53e3a6 100%);
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 400px;
  margin-top: -200px;
  overflow: hidden;
}
.wrapper.form-success .container h1 {
  -webkit-transform: translateY(85px);
          transform: translateY(85px);
}
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 80px 0;
  height: 400px;
  text-align: center;
}
.container h1 {
  font-size: 40px;
  -webkit-transition-duration: 1s;
          transition-duration: 1s;
  -webkit-transition-timing-function: ease-in-put;
          transition-timing-function: ease-in-put;
  font-weight: 200;
}
form {
  padding: 20px 0;
  position: relative;
  z-index: 2;
}
form input {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  outline: 0;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background-color: rgba(255, 255, 255, 0.2);
  width: 250px;
  border-radius: 3px;
  padding: 10px 15px;
  margin: 0 auto 10px auto;
  display: block;
  text-align: center;
  font-size: 18px;
  color: white;
  -webkit-transition-duration: 0.25s;
          transition-duration: 0.25s;
  font-weight: 300;
}
form input:hover {
  background-color: rgba(255, 255, 255, 0.4);
}
form input:focus {
  background-color: white;
  width: 300px;
  color: #53e3a6;
}
form button {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  outline: 0;
  background-color: white;
  border: 0;
  padding: 10px 15px;
  color: #53e3a6;
  border-radius: 3px;
  width: 250px;
  cursor: pointer;
  font-size: 18px;
  -webkit-transition-duration: 0.25s;
          transition-duration: 0.25s;
}
form button:hover {
  background-color: #f5f7f9;
}
.bg-bubbles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.bg-bubbles li {
  position: absolute;
  list-style: none;
  display: block;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.15);
  bottom: -160px;
  -webkit-animation: square 25s infinite;
  animation: square 25s infinite;
  -webkit-transition-timing-function: linear;
  transition-timing-function: linear;
}
.bg-bubbles li:nth-child(1) {
  left: 10%;
}
.bg-bubbles li:nth-child(2) {
  left: 20%;
  width: 80px;
  height: 80px;
  -webkit-animation-delay: 2s;
          animation-delay: 2s;
  -webkit-animation-duration: 17s;
          animation-duration: 17s;
}
.bg-bubbles li:nth-child(3) {
  left: 25%;
  -webkit-animation-delay: 4s;
          animation-delay: 4s;
}
.bg-bubbles li:nth-child(4) {
  left: 40%;
  width: 60px;
  height: 60px;
  -webkit-animation-duration: 22s;
          animation-duration: 22s;
  background-color: rgba(255, 255, 255, 0.25);
}
.bg-bubbles li:nth-child(5) {
  left: 70%;
}
.bg-bubbles li:nth-child(6) {
  left: 80%;
  width: 120px;
  height: 120px;
  -webkit-animation-delay: 3s;
          animation-delay: 3s;
  background-color: rgba(255, 255, 255, 0.2);
}
.bg-bubbles li:nth-child(7) {
  left: 32%;
  width: 160px;
  height: 160px;
  -webkit-animation-delay: 7s;
          animation-delay: 7s;
}
.bg-bubbles li:nth-child(8) {
  left: 55%;
  width: 20px;
  height: 20px;
  -webkit-animation-delay: 15s;
          animation-delay: 15s;
  -webkit-animation-duration: 40s;
          animation-duration: 40s;
}
.bg-bubbles li:nth-child(9) {
  left: 25%;
  width: 10px;
  height: 10px;
  -webkit-animation-delay: 2s;
          animation-delay: 2s;
  -webkit-animation-duration: 40s;
          animation-duration: 40s;
  background-color: rgba(255, 255, 255, 0.3);
}
.bg-bubbles li:nth-child(10) {
  left: 90%;
  width: 160px;
  height: 160px;
  -webkit-animation-delay: 11s;
          animation-delay: 11s;
}
@-webkit-keyframes square {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  100% {
    -webkit-transform: translateY(-700px) rotate(600deg);
            transform: translateY(-700px) rotate(600deg);
  }
}
@keyframes square {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  100% {
    -webkit-transform: translateY(-700px) rotate(600deg);
            transform: translateY(-700px) rotate(600deg);
  }
}
</style>

</head>
<body>
<div class="wrapper">
    <div class="container">
        <h1>Welcome</h1>
        <form class="form">
            <input type="text" placeholder="Username">
            <input type="password" placeholder="Password">
            <button type="submit" id="login-button">Login</button>
        </form>
    </div>
    <ul class="bg-bubbles">
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>
</div><div id="bcl"><a style="font-size:8pt;text-decoration:none;" href="http://www.devanswer.com">Free Frontend</a></div>
<script>
$("#login-button").click(function (event) {
    event.preventDefault();
    $('form').fadeOut(500);
    $('.wrapper').addClass('form-success');
});
</script>

</body>
</html>
Preview