remove this

@media screen and (min-width: 980px) {
    .category .et_pb_post a img {
        width:40%!important;/* float:left!important; *//* margin-right:30px!important */
    }
}

@media screen and (min-width: 980px) {
    .archive .et_pb_post a img {
        width:40%!important;/* float:left!important; *//* margin-right:30px!important; */
    }
}