*{
    margin:0;
}
#container{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: rgb(238, 144, 255);
  }
  .book{
    position: relative;
    border-radius: 10px;
    width: 210px;
    height: 300px;
    /* Internal Image */
    background-image: url('koyel3.jpeg');
    background-size:contain;
    background-repeat: no-repeat;
    background-position: center;
    background-size: 97%;
    -webkit-box-shadow: 1px 1px 12px black;
    box-shadow: 1px 1px 12px black;
    -webkit-transform: preserve-3d;
    -ms-transform: preserve-3d;
    transform: preserve-3d;
    -webkit-perspective: 2000px;
    perspective: 2000px;
  }
  .cover{
    top: 0;
    position: absolute;
    background-color: lightgray;
    background-image: linear-gradient( 40deg,rgb(218, 1, 203) , black);
    background-size: cover;
    background-position: center;
    width: 100%;
    height: 100%;
    border-radius: 10px;
    cursor: pointer;
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
    -webkit-transform-origin: 0;
    -ms-transform-origin: 0;
    transform-origin: 0;
    -webkit-box-shadow: 1px 1px 12px black;
    box-shadow: 1px 1px 12px black; }
  
  .book:hover .cover{
   -webkit-transition: all 0.5s;
   transition: all 0.5s;
   -webkit-transform: rotatey(-85deg);
   -ms-transform: rotateY(-85deg);
   transform: rotatey(-95deg);
  }


  /* Heart Styling */

  .heart {
    position: relative;
    background-color: #e60303;
    height: 60px;
    width:60px;
    top:180px;
    left:75px;
    transform: rotate(-45deg);
    animation: .8s beat infinite;
  }
  .heart:before, .heart:after {
    content:"";
    background-color: #e60303;
    border-radius:50%;
    height: 60px;
    width: 60px;
    position: absolute;
  }
  .heart:before {
    top:-30px;
    left:0;
  }
  .heart:after {
    left:30px;
    top:0;
  }
  .smile {
    position: absolute;
    width:30px;
    height:15px;
    background-color: #333;
    z-index:1;
    border-radius: 0 0 100px 100px;
    top:200px;
    left:90px;
    overflow: hidden;
  }
  .smile:before {
    content:"";
    position: absolute;
    border-radius:50%;
    width:20px;
    height:20px;
    background-color: #030202;
    top:5px;
    left:5px;
  }
  .eyes {
    position: absolute;
    border-radius: 50%;
    background-color: #333;
    width:10px;
    height:10px;
    z-index:1;
    top:185px;
    left:120px;
    box-shadow: -40px 0 #333;
    transform-origin: 50%;
    animation: close 2s infinite;
  }
  @keyframes close {
    0%, 100% {
      transform: scale(1, .05);
      }
    5%, 95% {
          transform: scale(1, 1);
      }
  }
  @keyframes beat {
    0%, 40%, 100% {
      transform: scale(1) rotate(-45deg);
    }
    25%, 60% {
      transform: scale(1.1) rotate(-45deg);
    }
  }


  .notes {
    position: absolute;
    color: #ff9595;
    font-size: 30px;
    top:40px;
    width:200px;
    text-align: center;
    font-family: 'Protest Revolution', sans-serif;
  }
  .notes:before, .notes:after {
    position: absolute;
    left:5px;
    text-align: center;
    width:200px;
  }
  .notes:before {
    content:"Birthday";
    top:30px;
    color: #d04e4e;
    font-family: 'Protest Riot', sans-serif;
  }
  .notes:after {
    content:"day!";
    top:60px;
    font-family: 'Protest Riot', sans-serif;
  }

  .click
  {
    position: absolute;
    margin-top: 390px;
    text-align: center;
    color:#690272;
    font-family: cursive;
  }

  /* For mobile devices */
@media only screen and (max-width: 768px) {
  .click {
    font-family: 'Protest Riot', sans-serif; /* Specify your fallback font for mobile devices */
  }
}