<% if current_user.has_feature_flag?('no_free_tier') && current_user.account_type == 'PERSONAL30' %>
    <div class="CDB-Text FlashMessage FlashMessage--main">
        <div class="u-inner">
            <div class="FlashMessage-info FlashMessage--main u-flex u-justifySpace u-alignCenter" style="width: 100%; flex-direction: row;">
                <p class="u-flex">You're currently under your 30-day Trial Period. Add your billing info to keep using our platform.</p>
                <p class="u-flex">
                    <a href="#" class="CDB-Button CDB-Button--secondary CDB-Button--big" style="background-color: #fff">
                        <span class="CDB-Button-Text CDB-Text is-semibold CDB-Size-medium u-upperCase">Add payment method</span>
                    </a>
                </p>
            </div>
        </div>
    </div>
<% end %>

<% if current_user.has_feature_flag?('no_free_tier') && current_user.account_type == 'PERSONAL30' %>
    <div class="CDB-Text FlashMessage FlashMessage--main">
        <div class="u-inner">
            <div class="FlashMessage FlashMessage-info FlashMessage--main u-flex u-justifySpace u-alignCenter">
                <p class="u-flex">You're currently under your 30-day Trial Period. Add your billing info to keep using our platform.</p>
                <p class="u-flex">
                    <a href="#" class="CDB-Button CDB-Button--secondary CDB-Button--secondary--background CDB-Button--big">
                        <span class="CDB-Button-Text CDB-Text is-semibold CDB-Size-medium u-upperCase">Add payment method</span>
                    </a>
                </p>
            </div>
        </div>
    </div>
<% end %>

Use new classes for button
Use new classes for button
