Use this CSS file as your final upload.

```css
body{
	background:#333;
}

#all{
	width:90%;
	margin-left:auto;
	margin-right:auto;
	background:#FFF;
}

#main_content{
	display:-webkit-flex;
	display:-ms-flexbox;
	display:flex;
	-webkit-flex-flow:row wrap;
	-ms-flex-flow:row wrap;
	flex-flow:row wrap;
	-webkit-justify-content:space-between;
	-ms-flex-pack:justify;
	justify-content:space-between;
}

a:link{
	text-decoration:none;
	font-weight:bold;
	font-size:1.12em;
	color:#960;
}

a:active{
	text-decoration:underline;
	font-weight:bold;
	font-size:1.12em;
	color:#F90;
}

a:hover{
	text-decoration:underline;
	font-weight:bold;
	font-size:1.12em;
	color:#F90;
}

a:visited{
	text-decoration:none;
	font-weight:bold;
	font-size:1.12em;
	color:#960;
}

/* -------------------------------------------------- 
   top navigation styles
-----------------------------------------------------*/

nav{
	border-bottom:solid 1.5px #FF9900;
}

nav ul{
	display:-webkit-flex;
	display:-ms-flexbox;
	display:flex;
	-webkit-flex-wrap:wrap;
	-ms-flex-wrap:wrap;
	flex-wrap:wrap;
	word-break:break-all;
}

nav li{
	margin:.2em;
	display:-webkit-flex;
	display:-ms-flexbox;
	display:flex;
	-webkit-align-items:center;
	-ms-flex-align:center;
	align-items:center;
}

nav li.search-form{
	margin-right:1em;
	margin-left:auto;
}

/* -------------------------------------------------- 
   sidebar
-----------------------------------------------------*/

aside{
	display:-webkit-flex;
	display:-ms-flexbox;
	display:flex;
	-webkit-flex-direction:column;
	-ms-flex-direction:column;
	flex-direction:column;
	-webkit-justify-content:flex-start;
	-ms-flex-pack:start;
	justify-content:flex-start;
	-webkit-align-self:flex-start;
	-ms-flex-item-align:start;
	align-self:flex-start;
	-webkit-flex:.5;
	-ms-flex:.5;
	flex:.5;
}

.links{
	list-style:none;
}

.links li{
	margin:.5em 0;
}

.side a:link{
	text-decoration:none;
	font-weight:bold;
	font-size:.9em;
	color:#960;
}

.side a:active{
	text-decoration:underline;
	font-weight:bold;
	font-size:.9em;
	color:#F90;
}

.side a:hover{
	text-decoration:underline;
	font-weight:bold;
	font-size:.9em;
	color:#F90;
}

.side a:visited{
	text-decoration:none;
	font-weight:bold;
	font-size:.9em;
	color:#960;
}

/* -------------------------------------------------- 
   main content columns
-----------------------------------------------------*/

.left{
	-webkit-flex:1;
	-ms-flex:1;
	flex:1;
	padding:.5em;
	background:#1f3c88;
	color:#ffffff;
}

.center{
	-webkit-flex:1;
	-ms-flex:1;
	flex:1;
	padding:.5em;
	background:#2a9d8f;
	color:#ffffff;
}

.right{
	-webkit-flex:1;
	-ms-flex:1;
	flex:1;
	padding:.5em;
	background:#f4a261;
	color:#222222;
}

/* -------------------------------------------------- 
   footer
-----------------------------------------------------*/

footer{
	display:-webkit-flex;
	display:-ms-flexbox;
	display:flex;
	-webkit-justify-content:center;
	-ms-flex-pack:center;
	justify-content:center;
}

.footer_info{
	padding:.3em;
	font-size:1.1em;
}

/* -------------------------------------------------- 
   media query under 700px
-----------------------------------------------------*/

@media screen and (max-width:700px){

	#main_content{
		-webkit-flex-direction:column;
		-ms-flex-direction:column;
		flex-direction:column;
	}

	aside{
		display:-webkit-flex;
		display:-ms-flexbox;
		display:flex;
		-webkit-flex-direction:row;
		-ms-flex-direction:row;
		flex-direction:row;
	}

	.links{
		display:-webkit-flex;
		display:-ms-flexbox;
		display:flex;
		-webkit-flex-direction:row;
		-ms-flex-direction:row;
		flex-direction:row;
		-webkit-flex-wrap:wrap;
		-ms-flex-wrap:wrap;
		flex-wrap:wrap;
	}

	.links li{
		margin:auto .3em auto;
	}

	footer{
		-webkit-flex-direction:row;
		-ms-flex-direction:row;
		flex-direction:row;
		-webkit-flex-wrap:wrap;
		-ms-flex-wrap:wrap;
		flex-wrap:wrap;
	}
}
```