Very annoy/tricky CSS problem

Hi,
I am trying place my featured image to the right of my post. However when i add code the my css file and upload it the image appears to the right but the whole header section goes haywire. I cant figure out why either as i am not touching any css code to do with that area. Also when i add it in using the developer tool (chrome) all appears as i
want to.

https://www.sligotourism.ie/attractions/?all

.type-adventure .original-info, .type-dining .original-info, .type-accomodation .original-info,
.type-sligopubs .original-info, .type-attractions .original-info, .type-shopping .original-info
{min-height:100px;margin-left:225px;margin-bottom:30px;color:#555;background:url(../../../../../S00101%7E1/AppData/Local/Temp/images/original_info_bg.png) top left repeat-y;padding-left:30px;padding-top:40px;width:360px ;font-size:14px !important;font-family:'helvetica' !important;}
.original-info.fullwidth {width:640px;}

/***** Added Code ****/
.original-info
{
float: right !important;
width:75%!important;
}

/***** End Added Code ****/