Please, replace previous code snippet with CSS code below. This snippet removes all list style symbols on blog pages. If you need to add some ul lists to post, add “unordered-list” class to ul block;

body .post-single-page ul {
	padding-left: 0;
}

body .post-single-page ul > li:before {
	display: none;
}

.unordered-list {
	padding-left: 20px !important;;
}

.unordered-list > li:before {
	display: block !important;;
}

Regards