body {
    background-color: #E0E0E2;
}

ul {
    list-style-type: none;
    text-align: center;
    padding: 0px;
}

li {
    display: inline;
}

main {
    text-align: center;
}

footer {
    text-align: center;
}

h1 {
    color: #721817;
}

h2 {
    color: #721817;
}

.center-text {
    text-align: center;
}

img {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

h2 > span {
    color: #FA9F42;
    font-size: 0.75em;
}

form > div {
    margin-top: 0.5em;
    margin-bottom: 0.5em;
}

#copyright {
    padding-top: 12px;
    font-size: 0.75em;
}

input:focus:invalid {
    color: red;
    border: red 3px solid;
}