body {
    font-family: "Calibri", sans-serif;
    margin: 0;
    padding: 0;
}

nav ul {
    display: flex;
    justify-content: center;
    align-items: center;
    position: sticky;
    list-style-type: none;
    text-align: center;
    margin: 0;
    padding: 3px;
    background-color: teal;
    font-size: 20px;
}

nav li {
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-grow: 1;
}

nav a {
    margin: auto;
    color: black;
    text-decoration: none;
}

main {
    max-width: 800px;
    margin: auto;
    min-height: calc(100vh - 88px);
}

form {
    display: inline;
}

button {
    background-color: inherit;
    border: none;
}

button:hover {
    cursor: pointer;
}

div.edit {
    border: 2px dashed black;
    background-color: lightpink;
    padding: 10px;
}

footer {
    text-align: center;
    margin: 0;
    padding: 3px;
    background-color: teal;
    font-size: 12px;
}