html {
    height: 100%;
}

body {
    background-color: papayawhip;
    font-family: monospace;
    font-size: 16px;
    display: flex;
    flex-direction: column;
    padding: 15px;
    min-height: 100%;
    max-width: 750px;
    width: 100%;
    position: relative;
}

.about, .back-btn {
    position: absolute;
    right: 0;
    top: 33px;
}

h1 {
    font-size: 1.4rem;
}

a {
    color: blue;
}

a:visited {
    color: blueviolet;
}

a:hover {
    color: violet;
}

footer {
    border-top: 1px solid lightgrey;
    margin-top: 1em;
    padding-top: 1em;
    color: lightslategrey;
    font-size: 14px;
}

li::marker {
    content: "⚑ ";
    size: 1.2rem;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}