wp-prismatic/css/styles-blocks.css

/* Prismatic - Block Styles */

.block-editor .editor-plain-text.block-editor-plain-text.wp-block-prismatic-blocks[style] {
	padding: 20px; line-height: 22px; font-size: 14px; font-family: Menlo, Consolas, Monaco, monospace; 
	white-space: pre; resize: vertical !important; overflow-x: auto !important; overflow-y: hidden !important; 
	-webkit-hyphens: none; -moz-hyphens: none; -ms-hyphens: none; hyphens: none;
	-moz-tab-size: 4; -o-tab-size: 4; tab-size: 4;
	-ms-word-break: normal; word-break: normal;
	-webkit-overflow-scrolling: touch;
	}