.center-login {
   width: 400px;
   height: 400px;
   position: absolute;
   left: 50%;
   top: 50%; 
   margin-left: -175px;
   margin-top: -150px;
}

div > .sub-header {
    background-color: #6785C1 !important;
    border-color: #6785C1 !important;
    color: #FFFCFC !important;
}