My website is http://bobsysmum.co.uk
I’ve used css
.wp-post-image {width:100%;}
which does make them bigger, but the quality is awful. Even after i’ve increased the thumbnail size in media settings, and regenerated thumbnails.
Then, for mobile screens I’ve been trying
@media screen and (max-width: 440px)
.alignleft.wp-post-image {
or
@media screen and (max-width: 440px)
.wp-post-image {
before any of my changes, and nothing works at all. The media screen images stay the same whatever css change i try to make