CSS Heart in Envelope

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To learn how to create the CSS Heart in Envelope follow the steps below and watch the video tutorial.

Demo:

Step1.

Add HTML

<div class="valentines-day">
  <div class="envelope"></div>
  <div class="heart"></div>
  <div class="text">HAPPY </br>VALENTINE'S </br>DAY!</div>
  <div class="front"></div>
  <div class="text2">- hover over the envelope - </div>
</div>

Step2.

Add CSS

Set the colour and the position of the background and elements:

body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background-color: #f1e3d3;
  overflow: hidden;
}
.valentines-day {
  position: relative;
  cursor: pointer;
}

Style the envelope:

.envelope {
  position: relative;
  filter: drop-shadow(0 0 25px rgba(0,0,0,.3));
}

.envelope:before {
  content:"";
  position: absolute;
  width:254px;
  height:254px;
  background-color: #ff9494;
  transform: rotate(-45deg);
  border-radius: 0 15px 0 0;
  left:-37px;
  top:-82px;
}

.envelope:after {
  content:"";
  position: absolute;
  background-color: #ff9494;
  width:360px;
  height:225px;
  left:-90px;
  top:45px;
}

Add and style the heart:

.heart {
  position: relative;
  background-color: #e01911;
  display: inline-block;
  height: 180px;
  top:50px;
  left:0;
  transform: rotate(-45deg);
  width:180px;
  filter: drop-shadow(0 -10px 25px rgba(0,0,0,.3));
  transition: .5s;
}
  
.heart:before, .heart:after {
  content:"";
  background-color: #e01911;
  border-radius:50%;
  height: 180px;
  width: 180px;
  position: absolute;
  }
  
.heart:before {
  top:-100px;
  left:0;}
  
.heart:after {
  left:100px;
  top:0;}

Add the front part of the envelope:

.front {
  position: absolute;
  width:0;
  height:0;
  border-right: 190px solid #fbd2d2;
  border-top: 113px solid transparent;
  border-bottom: 113px solid transparent;
  top:44px;
  left:80px;
  z-index:4;
}

.front:before {
  content:"";
  position: absolute;
  width:0;
  height:0;
  border-left: 190px solid #fbd2d2;
  border-top: 113px solid transparent;
  border-bottom: 113px solid transparent;
  top:-113px;
  left:-170px;
}

.front:after {
  width:0;
  height:0;
  position: absolute;
  content:"";
  border-bottom: 150px solid #fce7e9;
  border-right:180px solid transparent;
  border-left: 180px solid transparent;
  top:-36px;
  left:-170px;
}

Style the text:

.text {
  position: absolute;
  font-family: arial;
  letter-spacing:5px;
  text-align: center;
  color: white;
  z-index:2;
  top:80px;
  left:15px;
  transition: .5s;
}
.text2 {
  position: absolute;
  top:275px;
  color: white;
  font-family: brush script mt;
  text-align: center;
  width:195px;
  font-size:20px;
}

Add transition on hover:

.valentines-day:hover .heart {
  transform: translateY(-50px) rotate(-45deg);
}

.valentines-day:hover .text {
  transform: translateY(-50px);
}

Watch also the video tutorial:

Enjoy coding!

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