body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
}

.nav-wrapper a {
    font-size: 1.25em;
}

main {
    flex: 1 0 auto;
    padding: 80px 0;
}

#registration-form {
    margin-bottom: 60px;
}

.button-wrapper {
    margin: 40px 0;
    width: 100%;
    text-align: center;
}

#back-button {
    float: right;
}

.hidden {
    display: none;
}

.error-message {
    color: #f44336;
}

.page-footer {
    padding-bottom: 20px;
}

.page-footer a {
    color: #263238;
    text-decoration: underline;
}