[bug] Avoid setting CSS rules globally

[pandafy]

The following rules set CSS property globally which can be problematic in downstream projects.

netjsongraph.js/src/css/netjsongraph.css

Lines 1 to 16 in aec9965

	* {
	margin: 0;
	padding: 0;
	outline: none;
	box-sizing: border-box;
	}
	html,
	body {
	width: 100%;
	height: 100%;
	overflow: hidden;
	font-family: Arial, sans-serif;
	font-family: sans-serif;
	font-size: 14px;
	}

[Unnati-Gupta24]

Hello @pandafy
I'm Unnati currently pursuing my bachelors in computers. I'm thinking we could solve this by creating a more targeted CSS approach that only affects the graph component, preventing any unexpected style conflicts. Please assign this issue to me.

[pandafy]

@Unnati-Gupta24 you can go ahead and work on this.

[Unnati-Gupta24]

@pandafy thank you I’ve started working on it.