html {
    height: 100%;
}

body {
    background-color: #141414;
    color: whitesmoke;
    font-family: monospace;
    font-size: 2em;
    width: 50%;
    height: 100%;
    margin: auto;
    display: flex;
    flex-direction: column;
}

h1 {
    width: 100%;
    text-align: center;
}

img {
    width: 100%;
}

.popup {
    justify-content: center;
    text-align: center;
    border: 1px solid;
    border-radius: 10px;
    padding: 1em;
    margin: 1em;
    background-color: whitesmoke;
    color: #141414;
}

main {
    flex: 1 0 auto;
    justify-content: center;
    text-align: center;
}

footer {
    justify-content: center;
    text-align: center;
    flex: 0 0 auto;
    padding-bottom: 1em;
}

a {
    color: #2ab225;
    text-decoration: none;
}

a:before {
    content: "<";
}

a:after {
    content: ">";
}

form input[type=text] {
    width: 50%;
    font-size: 1em;
}

form textarea {
    width: 100%;
    height: 10em;
    border-radius: 10px;
    font-size: 1em;
}

form input[type=submit] {
    background-color: #2ab225;
    border-color: #141414;
    border-radius: 10px;
    padding: 1em 2em 1em 2em;
}

.message {
    padding: 1em;
    border-top: solid 1px whitesmoke;
}