style3.css

 /* remove the list style */
	#top_menu  {
		margin:0px; 
		padding:0px; 
		list-style:none;
	}	
	
		/* make the LI display in-line */
		/* it's position relative so that position absolute */
		/* can be used in sub-menu */
		#top_menu li {
			float:left; 
			display:block; 
			width: 120px;
			height: 30px;
			border-radius: 10px;
			border: 3px solid black; 
			position:relative;
			z-index:500; 
			list-style: none;
			margin: 5px ;
			padding: 3px;
			background:white;
			 
			
		}
		
		#top_menu a:link {color:black;}
		#top_menu a:link {text-decoration:none;}
		#top_menu a:visited {text-decoration:none;}
		#top_menu a:visited {color:black;}
	
		
		/* this is the parent menu */ /*the order is = ul>li>ul>li>a*/
		#top_menu li a {
			display:block; 
			padding:0px; 
			text-decoration:none; 
			font: bold 12px Arial;
			text-align: center;
			height: 35px;
		}
		
		
		/* submenu, it's hidden by default */
		#top_menu ul {
			position:absolute; 
			display:none; 
			margin-left:-12px; 
			margin-top:0px;
			padding:0px; 
			list-style:none;
			
			}

			
body{
	max-width: 1080px; /*this is needed for flexible box style*/
	display:-webkit-box; /*this is needed for flexible box model; it says about a special tool box/kit that holds some flexible boxes*/
	/*and this will not work in all the browser*/
	margin-top: 20px;
	margin-left: 40px;	
	
}
		
		
		
	#big_guy{
	/*width:100%; /*this is needed for flexible box style*/
	display:-webkit-box; /*this is needed for flexible box model; it says about a special tool box/kit that holds some flexible boxes*/
	/*and this will not work in all the browser*/
	-webkit-box-orient: vertical; /*each child under big_guy will be shown as a box place vertical*/
	-webkit-box-flex: 1; /*the value of the website width/height is flexible*/
	 }

	
	
#main_section{ /*under section_div are main section and side news*/
-webkit-box-flex: 1;
display:-webkit-box;
/*margin:20px;*/
position: relative;
margin: 0px;
padding:5px;
margin-top: 5px;
border: 3px solid black;
border-radius: 10px;
height: 470px;
}

#content{ /*under section_div are main section and side news*/
-webkit-box-flex: 1;
display:-webkit-box;
/*margin:20px;*/
margin: 0px;
padding:0px;
-webkit-box-orient: vertical; 
padding:5px;
}

/*margin:0 0 0 0 means margin: north east south west*/


p{
line-height:170%;
font-family: Arial;
font-size: 16px;
}


/*#main_section div:not(#home){ //hide done with jquery; no need here
display: none;
}*/