html, body {
    height: 100%;
    margin: 0;
}

.image {
    display: flex;
    flex-direction: column;
    align-items: center;
}
header {
    background-color: teal;
    color: whitesmoke;
    font-family: 'Courier New', Courier, monospace;
    width: 110%;
    align-items: center;
    position: relative;
    max-width: none;
}

section.subheader {
    display: block;
    position: relative;
    margin-left: 10%;
    margin-right: 10%;
    margin-bottom: 3%;
    text-align: center;
}

section.footer {
    width: 110%;
    position: relative;
    background-color: teal;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    text-align: left;
    padding: 12px;
    margin-bottom: none;
    margin: 0;
    max-width: none;
}

img {
    max-width: 180px;
    height: auto;
    padding: 12px;
    margin: 4px;
}

div.card {
    margin: 4px;
    padding: 4px;
    background-color: cadetblue;
    box-shadow: 4px 8px 6px 10px rgba(211, 211, 211, 0.8);
    align-items: center;
    position: relative;
    display: flex;
    border-radius: 12px;
    max-width: 90%;
}

h1 {
    text-align: center;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    font-weight: bold;
    font-style: italic;
}
p.bodytext {
    text-align: center;
}

div.container {
    position: relative;
    background-color: cadetblue;
    display: flex;
    align-items: center;
    border-radius: 12px;
    padding: 12px;
    margin: 12px;
    box-shadow: 4px 8px 6px 10px rgba(211, 211, 211, 0.8);
    min-width: 90%;
    max-width: 98%;

}

a:link {
    text-decoration: none;
    color: whitesmoke;
}
a:visited {
    text-decoration: none;
    color: whitesmoke;
}

a:active {
    text-decoration: none;
}

a:hover {
    text-decoration: solid;
    color: aquamarine;
    font-weight: bold;
}

.flex-container {
    position: relative;
    display: flex;
    align-items: center;
    max-width: fit-content;
}

.book-cards {
    margin-bottom: 5%;
}