Bootstrap Pagelayout

Proper positioning of div blocks using bootstrap 3

HTML

<div class="container">
		<div class="row">
			<div id="content" class="col-lg-4 col-lg-push-4 col-sm-12">
			<h2>This is Content</h2>
			<p>orem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
			</div>
			
			<div id="sidebar-left" class="col-lg-4  col-sm-6 ">
			<h2>This is Left Sidebar</h2>
			<p>orem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
			</div>
			
			
			<div id="sidebar-right" class="col-lg-4 col-lg-pull-4 col-sm-6">
			<h2>This is Right Sidebar</h2>
			<p>orem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages,...

CSS

/*!
 * Bootstrap v3.0.0
 *
 * Copyright 2013 Twitter, Inc
 * Licensed under the Apache License v2.0
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Designed and built with all the love in the world by @mdo and @fat.
 */

/*! normalize.css v2.1.0 | MIT License | git.io/normalize */

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section,
summary {
  display: block;
}

audio,
canvas,
video {
  display: inline-block;
}

audio:not([controls]) {
  display: none;
  height: 0;
}

[hidden] {
  display: none;
}

html {
  font-family: sans-serif;
  -webkit-text-size-adjust: 100%;
      -ms-text-size-adjust: 100%;
}

body {
  margin: 0;
}

a:focus {
  outline: thin dotted;
}

a:active,
a:hover {
  outline: 0;
}

h1 {
  margin: 0.67em 0;
  font-size: 2em;
}

abbr[title] {
  border-bottom: 1px dotted;
}

b,
strong {
  font-weight: bold;
}

dfn {
  font-style: italic;
}

hr {
  height: 0;
  -moz-box-sizing: content-box;
       box-sizing: content-box;
}

mark {
  color: #000;
  background: #ff0;
}

code,
kbd,
pre,
samp {
  font-family: monospace, serif;
  font-size: 1em;
}

pre {
  white-space: pre-wrap;
}

q {
  quotes: "\201C" "\201D" "\2018" "\2019";
}

small {
  font-size: 80%;
}

sub,
sup {
  position: relative;
  font-size: 75%;
  line-height: 0;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

img {
  border: 0;
}

svg:not(:root) {
  overflow: hidden;
}

figure {
  margin: 0;
}

fieldset {
  padding: 0.35em 0.625em 0.75em;
  margin: 0 2px;
  border: 1px solid #c0c0c0;
}

legend {
  padding: 0;
  border: 0;
}

button,
input,
select,
textarea {
  margin: 0;
  font-family: inherit;
  font-size: 100%;
}

button,
input {
  line-height: normal;
}

button,
select {
  text-transform: none;
}

button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
  cursor: pointer;
  -webkit-appearance: button;
}

button[disabled],
html input[disabled] {
  cursor:...