Tweets not wrapping inside carousel

I have just noticed that tweets (or rather retweets, that’s all we display) are no longer wrapping inside the carousel (div class=rotatingtweets).

You can see this on the home page of the above site. Did something change in the last update and I just didn’t notice until now?

A fix might be

.rotatingtweet.cycle-slide {
	width: 345px;
}

to keep it inside .cycle-carousel-wrap, which is 350px in full screen mode, as can be seen on this test site: https://dev.henleyherald.com/

Please can you suggest a CSS fix that will work for responsive mode (because my solution won’t)? Or another CSS solution to make the retweets wrap?

Shortcode is
[rotatingtweets screen_name='henleyherald' only_rts=1 tweet_count=5 rotation_type='carousel' carousel_count='2' links_in_new_window='1' show_tco_link='1' show_follow='1' no_show_count='1' large_follow_button= '1' show_meta_timestamp='0' show_meta_via='0' show_meta_screen_name='0' show_meta_prev_next='1' auto_height='0']

Custom CSS is

.twitter-box {
	border: 2px solid #99ccff !important;
	padding: 0px 5px 0px 5px;
	margin-bottom: 10px;
}

.rotatingtweets,
.norotatingtweets  {
	border-top: 1px solid #c0c0c0 !important;
	border-bottom: 1px solid #c0c0c0 !important;
	margin: 0 0 2px 0;
	height: 220px !important;
}

.rtw_follow.follow-button {
	padding-top: 3px;
}

The page I need help with: [log in to see the link]