body {
    font-family: sans-serif;
    background-color: whitesmoke;
    margin: 0;
}

/* header */
.header {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.header a {
    color: blue;
    text-decoration: none;
}

#userinfo {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

/* footer */
.footer {
    display: flex;
    justify-content: center;
    color: grey;
}

/* common */
.divider {
    border: 0;
    border-top: 1px solid grey;
    margin: 20px 0;
}

/* main */
.container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    background-color: white;
    border: 1px solid grey;
}

.form-group {
    display: flex;
    align-items: center;
}

.form-group label {
    width: 200px;
    flex-shrink: 0;
}

#register-a {
    color: blue;
    text-decoration: none;
}

/* register */
#login-a {
    color: blue;
    text-decoration: none;
}

#register-fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

/* profile */
.info-row {
    display: flex;
}

.info-label {
    width: 100px;
    flex-shrink: 0;
}