#wpmem_login {
    padding: 20px;
    max-width: 1200px;
    background: white;
    margin: 0 auto;
}

 #wpmem_reg legend, #wpmem_login legend {
    font-size: 24px;
    line-height: 1;
    font-weight: 700;
    margin-bottom: 10px;
}