* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

main {
    position: relative;
    height: 100vh;
    max-height: 100vh;
    background-color: aliceblue;
}

.postcard-container {
    position: absolute;
    inset: 0;
    margin: auto;
    display: block;
    aspect-ratio: 100/148;
    inline-size: 100%;
    block-size: auto;
    height: max-content;
    width: auto;
    max-height: inherit;
    padding: 32px;
}
  
.postcard {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background-color: white;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
    padding: 2em;
    gap: 16px;
}
  
.postcard h1 {
    font-family: "ab-appare";
    font-weight: 500;
    font-size: 56px;
}
  
.postcard img {
    width: 100%;
    height: auto;
}

.postcard p {
    font-family: "ab-appare";
}

.signature {
    width: 100%;
    text-align: right;
}

@media screen and (min-width: 720px) {
    .postcard h1 {
        font-size: 64px;
    }

    .postcard p {
        font-size: 24px;
    }
}