body {
    margin: 0;
    overflow: hidden;
    background-color: pink;
}

#hearts-container {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.heart {
    position: absolute;
    top: -50px;
    left: 50vw;
    width: 30px;
    height: 30px;
    background: url('heart.png') no-repeat;
    background-size: contain;
    animation: fall 10s linear infinite;
}

#mail-container{
    position: absolute;
    z-index: 2;
    width: 100vw;
    height: 100dvh;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}

#mail{
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotateY(180deg);
    transition: transform 2s ease-in-out;
}

#mail img{
    width: 100%;
    z-index: 3;
}

#mail p{
    position: absolute;
    color: rgb(255, 222, 228);
    font-size: 2rem;
    font-family:'Times New Roman', Times, serif;
    font-weight: bold;
    z-index: 4;
    opacity: 0;
    padding: 18%;
    text-align: center;
}

#mail-container button{
    border: rgb(252, 133, 156) 2px solid;
    background-color: rgb(227, 114, 163);
    color: white;
    padding: 16px 32px;
    margin: 16px;
    border-radius: 16px;
    position: absolute;
    bottom: 80px;
}

@keyframes fall {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(100vh);
    }
}