Zu geringer Kontrast erschwert das Lesen von Texten deutlich.
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Originalmeldung: This element has insufficient contrast at this conformance level. Expected a contrast ratio of at least 4.5:1, but text in this element has a contrast ratio of 2.61:1. Recommendation: change background to #007faa.
Selector: #main_anchor > div:nth-child(2) > div > div > div:nth-child(2) > a
Kontext: <a href="/ueber-uns/service/expertendatenbank.html" target="_self" class="btn"> ...</a>