.success,
.error {
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
}

.success {
    color: green;
    background-color: #e8f5e9;
}

.error {
    color: red;
    background-color: #fdecea;
}

nav {
    margin-bottom: 15px;
}

nav a {
    margin-right: 15px;
    text-decoration: none;
}