Hey Michael,
Thanks for reaching out!
I’m admittedly not certain why the overflow issue is happening here — I cannot reproduce this on my own site, for example. In any case, the best solution is to set a minimum pixel height for that iframe. This isn’t perfect, and you may need to play around with the exact pixel value a bit to get things looking just right, but try adding CSS like the following to the bottom of your theme’s style.css file to start:
.eventbrite-ticket-embed > iframe {
height: auto !important;
min-height: 310px !important;
}
Let me know if that helps!
George