How can I add custom HTML codes in template editor of Blogger?

Question

I wanted to add this code in the head tag of my blog on blogger — http://www.techinfoblog.org/

When I tried to apply and save theme, it disappears after revisiting.

<script src="//load.sumome.com/" data-sumo-site-id="bcf035e7a7beeef231642bf9724d339c4268b018f3208344e694f2054d454233" async="async"></script>

Answer 1

Click on Layout Click on Add Gadget Choose HTML/JavaScript click sign +

More help here https://support.google.com/blogger/answer/176245?visit_id=1-636308283545217153-181022040&p=templates&hl=hr&rd=1

Answer 2

使用博主经典主题，因为它允许没有任何模板的普通 HTML 代码，然后你可以插入任何你想要的 html