https://www.cloudways.com/blog/10-wordpress-security-issues-how-to-fix-them/

https://blog.hubspot.com/website/wordpress-security-issues

Cookie Verordnung Schweiz – was ist jetzt zu tun?

Selectable recipient with pipes

https://blog.kulturbanause.de/2019/06/flexbox-responsive-layouts-ohne-media-queries/

https://wordpress.stackexchange.com/questions/77052/creating-custom-field-with-drop-down-on-new-post-page

Saving a dropdown value in wordpress

https://stackoverflow.com/questions/8987218/saving-a-dropdown-value-in-wordpress

https://wordpress.org/support/topic/dropdown-select-custom-fields-in-registration/

https://ivetetecedor.com/how-to-use-a-drop-down-menu-for-wordpress-custom-fields/

Bootstrap Carousel for your WordPress website

acf slider

Coding a Slider with Slick and ACF Pro in WordPress

https://www.pixelcrayons.com/l8/wordpress/wordpress-developers?utm_source=adwords&utm_medium=searchINR&utm_campaign=Soham-L3-EU-Generic-Technologies&utm_keywords=%2Bwordpress%20%2Bexperts&utm_adcopy={Ad}&gclid=CjwKCAjw5pPnBRBJEiwAULZKvgfGCRrpu_ZrBGM_z5PfPe4mfKYfPCTBAZkNPKeBnGElLqHQJzubUxoC6HsQAvD_BwE

https://www.jotform.com/blog/multilevel-drop-down-navigation-menus-examples-and-tutorials/

http://www.izzymenu.com/

http://css3menu.com/

einfache metaboxen:

https://metabox.io/how-to-create-custom-meta-boxes-custom-fields-in-wordpress/

mit radio button und dropdown:

https://madebydenis.com/meta-box-controls-select-and-dropdowns/

dropdown II

https://docs.metabox.io/fields/select/