librandi You may check now. Ref: Screenshot
Have added this to /local/css/custom.css
file :
#t3-content .blog img{max-width: 100% !important;}
.blog .column-1 .item-image.pull-left, .blog-featured .column-1 .item-image.pull-left{width:100% !important;padding-right:0 !important;}
Kindly ensure to clear your browser cache if changes dont reflect.