Adding divs on the right side - html

Question

So I have a silly question, how do I get my divs on the right side? I have main content but I need to set up four divs on the right side. It looks like this and I need to add div1 - 4. Am I supposed to add width:100%; float: left in .main_container?
Question #2 - I would like to group main_info1 - 3 under one div like main so that I could use .main in css with max-width: 900px; overflow: hidden; margin-left: 20px; attributes for all divs without the need for repeating but when I do that main_info2 jumps up and ignores main_info1 lists. Thanks.
HTML:
<div class="main_container">
<div class="title_container">
<h1>Title</h1>
</div>
<aside>
<div class="small_blocks">
<div class="block1">
<span>Text</span>
</div>
<div class="block2">
<span>Text</span>
</div>
</div>
</aside>
<div class="content clearfix">
<div class="image1">
<img src="img/img1.jpg">
</div>
<div class="image2">
<img src="img/img2.jpg">
</div>
</div>
<div class="main_info">
<h2>Title</h2>
<p>Text</p>
</div>
<div class="main_info2 clearfix">
<h2>Title</h2>
<ul>
<li>
<p>Text</p>
</li>
</ul>
</div>
<div class="main_info3 clearfix">
<h2>Title</h2>
<p>Text</p>
</div>
</div>
CSS:
.main_container {
width: 1360px;
margin: 0 auto;
background: url("../img/bg.jpg") left top no-repeat;
background-color: #0c0334;
}
.title_container {
display: table;
}
.title_container h1 {
float: left;
display: table-cell;
vertical-align: top;
margin-top: 50px;
margin-left: 20px;
line-height: 66px;
}
.small_blocks {
min-width: 900px;
overflow: hidden;
}
.small_blocks div {
height: 55px;
margin-top: 30px;
}
.small_blocks .block1 {
float: left;
margin-left: 20px;
background: #390b5d;
width: 595px;
line-height: 52px;
}
.small_blocks .block1 span {
font-size: 30px;
padding-left: 20px;
font-weight: 100;
}
.small_blocks .block2 {
float: left;
width: 285px;
background: #e26c34;
padding-left: 20px;
line-height: 52px;
vertical-align: middle;
}
.small_blocks .block2 span {
font-size: 30px;
padding-left: 10px;
font-weight: 100;
vertical-align: middle;
display: inline-block;
}
.clearfix:after {
content: "";
visibility: hidden;
display: block;
height: 0;
clear: both;
}
.content {
width: 900px;
height: 377px;
overflow: hidden;
margin: 20px 0 0 20px;
}
.content .image1 {
float: left;
width: 268px;
}
.content .image2 {
float: left;
margin-left: 10px;
width:100%;
max-width: 622px;
}
.main_info {
max-width: 900px;
overflow: hidden;
margin-top: 60px;
margin-left: 20px;
}
.main_info h2 {
height: 34px;
border-bottom: 1px solid #390b5d;
}
.main_info2 {
max-width: 900px;
overflow: hidden;
margin: 60px 0px 0px 20px;
background: #110321;
}
.main_info2 h2 {
background: #390b5d;
min-height: 55px;
width: 880px;
padding-left: 20px;
height: 34px;
color: #fff;
line-height: 52px;
}
.main_info3 {
max-width: 900px;
overflow: hidden;
margin: 60px 0px 0px 20px;
background: #390b5d;
}
.main_info3 h2 {
min-height: 55px;
width: 880px;
padding-left: 20px;
height: 34px;
color: #fff;
line-height: 52px;
}

Answer 1

I think you are a newbie. You should work hard to master in HTML and CSS. :)
However, here is a solution. Please inspect them closely. Hopefully you will get your answers.
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
img {
display: block;
}
.clearfix:after {
content: "";
visibility: hidden;
display: block;
height: 0;
clear: both;
}
.wrapper {
min-width: 1000px;
max-width: 1360px;
margin: 0 auto;
padding: 0 20px;
}
.title_container {
padding-top: 50px 0 30px;
}
.title_container h1 {
line-height: 66px;
}
.small_blocks {
height: 55px;
overflow: hidden;
margin-bottom: 20px;
font-size: 30px;
font-weight: 100;
line-height: 52px;
color: #fff;
}
.small_blocks > div {
height: inherit;
float: left;
padding-left: 20px;
}
.small_blocks .block1 {
background: #390b5d;
width: 66.111111%;
}
.small_blocks .block2 {
width: 33.888889%;
background: #e26c34;
}
.content {
/*height: 377px;*/
overflow: hidden;
margin-bottom: 60px;
}
.content > div img {
width: 100%;
height: auto;
}
.content .image1 {
float: left;
width: 29.777778%;
}
.content .image2 {
float: left;
width: 70.222222%;
padding-left: 10px;
}
.main_container {
width: 68.181818%;
float: left;
}
.main_info {
margin-bottom: 60px;
background: #d7d7d7;
}
.main_info .head {
padding-left: 20px;
background: #000;
color: #fff;
}
.main_info h2 {
height: 34px;
line-height: 34px;
}
.main_info .body {
padding: 20px;
}
.sidebar {
width: 31.818182%;
padding-left: 20px;
float: right;
}
.sidebar_block {
min-height: 150px;
margin-bottom: 20px;
padding: 20px;
background: #000;
color: #fff;
}
<div class="wrapper">
<header class="title_container">
<h1>Title</h1>
</header>
<main class="main_container">
<div class="small_blocks">
<div class="block1">
<span>Block 1</span>
</div>
<div class="block2">
<span>Block 2</span>
</div>
</div>
<div class="content clearfix">
<div class="image1">
<img src="http://dummyimage.com/268x377/000/fff.jpg&text=image1">
</div>
<div class="image2">
<img src="http://dummyimage.com/622x377/000/fff.jpg&text=image2">
</div>
</div>
<section class="main_info">
<div class="head">
<h2>Main Info-1 h2</h2>
</div>
<div class="body">
Main info 1
</div>
</section>
<section class="main_info">
<div class="head">
<h2>Main Info-2 h2</h2>
</div>
<div class="body">
Main info 2
</div>
</section>
<section class="main_info">
<div class="head">
<h2>Main Info-3 h2</h2>
</div>
<div class="body">
Main info 3
</div>
</section>
</main>
<aside class="sidebar">
<section class="sidebar_block">Div 1</section>
<section class="sidebar_block">Div 2</section>
<section class="sidebar_block">Div 3</section>
<section class="sidebar_block">Div 4</section>
</aside>
</div>
Regarding the questions in your comment:
Actually float works. As you use a fixed width width: 420px;, probably there has no enough space for the second ul to accommodate it in a single row. Use width: 50%; or below and see the changes. Or, you can check it in a wider screen, like, 1360px resolution.
Yes, for smaller devices.
This is a basic example. I used percentage values for the column width. So columns may become very narrower in smaller devices. To prevent that, I used min-width: 1000px for .wrapper. This will prevent narrower column width, but cause a horizontal scroll-bar in smaller devices.