body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #fae1dd;
}

.container {
    position: relative;
}
.valentines {
    position: relative;
    top: 50px;
    cursor: pointer;
    animation: up 3s linear infinite;
} 


.envelope {
    position:relative;
    width:300px;
    height:200px;
    background-color:#f08080;
}

.envelope:before {
    background-color: #f08080;
    content:"";
    position:absolute;
    width:212px;
    height:212px;
    transform: rotate(45deg);
    top:-105px;
    left:44px;
    border-radius: 30px 0 0 0;
}

.card {
    position: absolute;
    background-color: #eae2b7;
    width: 270px;
    height: 170px;
    top: 5px;
    left: 15px;
    box-shadow: -5px -5px 100px rgba(0,0,0,0.4);
}

.card:before {
    content: "";
    position: absolute;
    border: 3px solid #003049;
    border-style: dotted;
    width: 240px;
    height: 140px;
    left: 12px;
    top: 12px;
}
    

.text {
    position: "";
    font-family: 'Brush Script MT', cursive;
    font-size: 28px;
    text-align: center;
    line-height: 25px;
    margin-top: 20px;
    left: 85px;
    color: #003049;
}

.heart {
    background-color: #d62828;
    display: inline-block;
    height: 30px;
    margin:0 10px;
    position: relative;
    top: 20px;
    left: 105px;
    transform: rotate(-45deg);
    width: 30px;
}
    
.heart:before,
.heart:after {
    content: "";
    background-color: #d62828;
    border-radius: 50%;
    height: 30px;
    position: absolute;
    width: 30px;
}

.heart:before {
    top: -15px;
    left: 0;
}

.heart:after {
    left: 15px;
    top: 0;
}

.front {
    position: absolute;
    border-right: 180px solid #f4978e;
    border-top: 95px solid transparent;
    border-bottom: 100px solid transparent;
    left: 120px;
    top: 5px;
    width: 0;
    height: 0;
    z-index: 10;
}
    
.front:before {
    position: absolute;
    content: "";
    border-left: 300px solid #f8ad9d;
    border-top: 195px solid transparent;
    left: -120px;
    top: -95px;
    width: 0;
    height: 0;
    }

    .shadow {
        position: absolute;
        width: 300px;
        height: 25px;
        border-radius: 50%;
        background-color: rgba(0,0,0,0.3);
        bottom: 250px;
        left: 650px;
        animation: scale 3s linear infinite;
        z-index: -1;

    }

    @keyframes up{
        0%,
        100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-30px);
        }
    }

    @keyframes scale{
        0%,
        100% {
            transform: scaleX(1);
        }
        50% {
            transform: scaleX(0.05);
        }
    }