How To Create Opening Envelope Animation

In this topic,

We are going to see how to create an opening envelope animation.

Step-1: Create Html Code in the index.html file.

<div class="letter-img">
  <div class="animated-mail">
    <div class="back-fold"></div>
    <div class="letter">
      <div class="letter-border"></div>
      <div class="letter-title"></div>
      <div class="letter-context"></div>
      <div class="letter-stamp">
        <div class="letter-stamp-inner"></div>
      </div>
    </div>
    <div class="top-fold"></div>
    <div class="body"></div>
    <div class="left-fold"></div>
  </div>
  <div class="shadow"></div>
</div>

Step-2: Add CSS Code in the <style>…</style> on index.html file.

body {
  background: #697491;
}
.letter-img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  cursor: pointer;
}
.animated-mail {
  position: absolute;
  height: 150px;
  width: 200px;
  -webkit-transition: 0.4s;
  -moz-transition: 0.4s;
  transition: 0.4s;
}
.animated-mail .body {
  position: absolute;
  bottom: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 100px 200px;
  border-color: transparent transparent #e95f55 transparent;
  z-index: 2;
}
.animated-mail .top-fold {
  position: absolute;
  top: 50px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 50px 100px 0 100px;
  -webkit-transform-origin: 50% 0%;
  -webkit-transition: transform 0.4s 0.4s, z-index 0.2s 0.4s;
  -moz-transform-origin: 50% 0%;
  -moz-transition: transform 0.4s 0.4s, z-index 0.2s 0.4s;
  transform-origin: 50% 0%;
  transition: transform 0.4s 0.4s, z-index 0.2s 0.4s;
  border-color: #cf4a43 transparent transparent transparent;
  z-index: 2;
}
.animated-mail .back-fold {
  position: absolute;
  bottom: 0;
  width: 200px;
  height: 100px;
  background: #cf4a43;
  z-index: 0;
}
.animated-mail .left-fold {
  position: absolute;
  bottom: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 50px 0 50px 100px;
  border-color: transparent transparent transparent #e15349;
  z-index: 2;
}
.animated-mail .letter {
  left: 20px;
  bottom: 0px;
  position: absolute;
  width: 160px;
  height: 60px;
  background: white;
  z-index: 1;
  overflow: hidden;
  -webkit-transition: 0.4s 0.2s;
  -moz-transition: 0.4s 0.2s;
  transition: 0.4s 0.2s;
}
.animated-mail .letter .letter-border {
  height: 10px;
  width: 100%;
  background: repeating-linear-gradient(-45deg, #cb5a5e, #cb5a5e 8px, transparent 8px, transparent 18px);
}
.animated-mail .letter .letter-title {
  margin-top: 10px;
  margin-left: 5px;
  height: 10px;
  width: 40%;
  background: #cb5a5e;
}
.animated-mail .letter .letter-context {
  margin-top: 10px;
  margin-left: 5px;
  height: 10px;
  width: 20%;
  background: #cb5a5e;
}
.animated-mail .letter .letter-stamp {
  margin-top: 30px;
  margin-left: 120px;
  border-radius: 100%;
  height: 30px;
  width: 30px;
  background: #cb5a5e;
  opacity: 0.3;
}
.shadow {
  position: absolute;
  top: 200px;
  left: 50%;
  width: 400px;
  height: 30px;
  transition: 0.4s;
  transform: translateX(-50%);
  -webkit-transition: 0.4s;
  -webkit-transform: translateX(-50%);
  -moz-transition: 0.4s;
  -moz-transform: translateX(-50%);
  border-radius: 100%;
  background: radial-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0), rgba(0, 0, 0, 0));
}
.letter-img:hover .animated-mail {
  transform: translateY(50px);
  -webkit-transform: translateY(50px);
  -moz-transform: translateY(50px);
}
.letter-img:hover .animated-mail .top-fold {
  transition: transform 0.4s, z-index 0.2s;
  transform: rotateX(180deg);
  -webkit-transition: transform 0.4s, z-index 0.2s;
  -webkit-transform: rotateX(180deg);
  -moz-transition: transform 0.4s, z-index 0.2s;
  -moz-transform: rotateX(180deg);
  z-index: 0;
}
.letter-img:hover .animated-mail .letter {
  height: 180px;
}
.letter-img:hover .shadow {
  width: 250px;
}

Review the below video.