How to Remove Border from Tables

Hello there, After the site updated, suddenly borders appeared on my tables. Can you help me get rid of them? This problem appears on all pages where I have added an html table. Here is one example: http://visaliabirthnetwork.org/provider-directory/health-wellness/ I have tried to use the custom css with no improvement:

.entry-content table, 
.entry-content td { border: none; }

Thank you!