.registrationWrapper {
    border: 1px solid red;
    background-color: #e6ffd8;
    border-radius: 5px;
}

.mandatory {
    border-color: red;
    border-width:2px;
}
    .mandatory ::after {
        content: '*';
        color: red;
    }
    .mandatory ::before {
        content: '*';
        color: red;
    }