change color grey lines (or remove them)

Hello annem5,

=> Put below css code into Additional CSS textarea (Dashboard >> Apperance >> Customize) then click on Save & Publish button.
=> If there is no Additional CSS option then put below css code into your current theme’s style.css file located at wp-content/themes/your_current_active_theme/ folder.


.site-header{
border-bottom-color: #9AB7B8 ;
}

.site-footer{
border-top-color: #9AB7B8 ;
}


Note : All Changes you done in style.css or other file are gone when you update theme. So prefer Child Theme

Hope this will helps you.

You can also include the border for the comments area in the second style that @addweb-solution-pvt-ltd shared:

.site-footer,
.comments-area {
	border-top-color: #9AB7B8 ;
}

thank you both! It worked very well. I understand how it works now :).

one question though: is it a disadvantage to use ‘custom css’ next to changes (for other things) in a child theme? or can I use both at the same time..? I for instance changes the colors of my menu via my child theme. But your solutions mentioned above I can only manage through ‘custom css’ in the appearance menu.

@annem5,

Happy to hear that solution worked for you!

I would suggest you to follow Child theme. Reason behind that is if any type of database failure happen in future then your CSS related changes will be lost if you follow CSS textarea (Dashboard >> Apperance >> Customize) concept.

Thanks!

@addweb-solution-pvt-ltd,

thank you for the advice, I managed to use the child theme!