How can I improve my Supply Theme blog layout?

@LynnieHHHY please add this css to the very end of your theme.scss.css file and check

.template-blog .sidebar {
display: none !important;
}
.template-blog .grid-item {
width: 100% !important;
}
.template-blog .article__image {
width: 100% !important;
}
.template-blog .lazyload__image-wrapper {
margin: unset !important;
}
.template-blog .lazyload__image-wrapper {
margin-bottom: 10px !important;
}

.template-blog h2 {
font-size: 40px;
}