I think this is something you copy/pasted from somewhere when you added the post content;
<div class="gd-bubble" style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: #ffffbf; border-style: solid; border-color: #e1c642; font-family: arial, sans-serif; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; height: auto; line-height: normal; text-align: left; direction: ltr; color: #000000; opacity: 0.96; position: absolute; width: 250px; z-index: 99992; border-top-left-radius: 5px; border-top-right-radius: 5px; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; top: 633px; left: 0px; background-position: initial initial; background-repeat: initial initial; border-width: 2px; padding: 7px; margin: 0px;">
it seems to be within the content, which you could check if you edit the post in the html mode of the editor, and scroll down.
there is a lot of other stuff in the content – consider not to copy/paste or to use the ‘paste as plain text’ button of the visual editor.
