3D Box Loader Animation | HTML, CSS & JavaScript

<div class="form-container sign-up-container">
    <form>
      <h2>Create Account</h2>

<div class="overlay-panel overlay-left">
        <h2>Welcome Back!</h2>
        <p>Login to continue</p>
        <button class="ghost" id="signIn">Sign In</button>
      </div>

<div class="overlay-panel overlay-right">
        <h2>Hello Friend!</h2>
        <p>Create your account</p>
        <button class="ghost" id="signUp">Sign Up</button>
      </div>

</div>
  </div>

</div>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: #ff7a00;
}

.container {
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
  width: 850px;
  max-width: 100%;
  min-height: 480px;
}

/* form containers */

.form-container {
  position: absolute;
  top: 0;
  height: 100%;
  transition: all .6s ease-in-out;
}

.sign-in-container {
  left: 0;
  width: 50%;
  z-index: 2;
}

.sign-up-container {
  left: 0;
  width: 50%;
  opacity: 0;
  z-index: 1;
}

.container.right-panel-active .sign-in-container {
  transform: translateX(100%);
}

.container.right-panel-active .sign-up-container {
  transform: translateX(100%);
  opacity: 1;
  z-index: 5;
}

form {
  background: white;
  display: flex;
  flex-direction: column;
  padding: 0 40px;
  height: 100%;
  justify-content: center;
  align-items: center;
  text-align: center;
}

h2 {
  margin-bottom: 15px;
}

input {
  background: #f4f4f4;
  border: none;
  padding: 12px;
  margin: 8px 0;
  width: 100%;
  border-radius: 6px;
}

input:focus {
  outline: none;
  background: #eee;
}

button {
  border-radius: 25px;
  border: none;
  background: #ff7a00;
  color: white;
  font-weight: 600;
  padding: 12px 45px;
  margin-top: 10px;
  cursor: pointer;
  transition: .3s;
}

button:hover {
  transform: scale(1.05);
}

.overlay-container {
  position: absolute;
  top: 0;
  left: 50%;
  width: 50%;
  height: 100%;
  overflow: hidden;
  transition: transform .6s ease-in-out;
  z-index: 100;
}

.container.right-panel-active .overlay-container {
  transform: translateX(-100%);
}

.overlay {
  background: linear-gradient(135deg, #ff7a00, #ff9a3c);
  color: white;
  position: relative;
  left: -100%;
  height: 100%;
  width: 200%;
  transform: translateX(0);
  transition: transform .6s ease-in-out;
}

.container.right-panel-active .overlay {
  transform: translateX(50%);
}

.overlay-panel {
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  top: 0;
  height: 100%;
  width: 50%;
  padding: 0 40px;
}

.overlay-left {
  transform: translateX(-20%);
}

.container.right-panel-active .overlay-left {
  transform: translateX(0);
}

.overlay-right {
  right: 0;
}

.ghost {
  background: transparent;
  border: 1px solid white;
  color: white;
}

- 3D Box Loader Animation

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