displaying div side by side - html

Question

I am having some issues trying to display my <div checkoutoptionsto the right and my <div productdetailsto the left of checkoutoptions
Here is how it is displaying now:
Here is how I would like it to display
It looks like there is some kind of wrapping around the div checkoutoptionsthat won't let me move the div productdetails upbut I have not idea how to correct the issue.
Here is a link to my website as an example if you would like to see it first hand.
Here is my HTML:
<!-- Share and title/show this panel on top -->
<div class="ProductMain" style= "float: left; ">
<h1 itemprop="name">%%GLOBAL_ProductName%%</h1>
%%GLOBAL_FacebookLikeButtonAbove%%
%%GLOBAL_FacebookLikeButtonBelow%%
%%GLOBAL_PinterestButton%%
<!--side panel with add to cart show this panel to the right-->
<div id="checkoutoptions">
%%SNIPPET_ProductAddToCartRight%%
<div><input id="ShopButton" style="display: none";></div>
%%SNIPPET_ProductAddToCartBelow%%
%%Panel.SideProductAddToWishList%%
<div class="WishlistRow DetailRow" style="display:%%GLOBAL_HideWishlist%%">
<a class="WishListButton" href="javascript: void(0)">ADD TO WISHLIST</a>
</div>
%%GLOBAL_AddThisLink%%
</div>
<!--Yotpo Reviews/ display this panel next to checkoutoptions to the left and right under ProductMain-->
<div id="productdetails">
<div style="padding: 0px 0px 0px; width: 200px; margin: auto; height: 00px"> </div><!--yotpo product rating-->
<div class="yotpo bottomLine"
data-product-id="%%GLOBAL_ProductId%%"
data-url="%%GLOBAL_ProductLink%%">
</div>
<div class="ProductDetailsGrid">
<div class="DetailRow RetailPrice" style="display: %%GLOBAL_HideRRP%%">
<span class="Label">%%LNG_RRP%%:</span>
%%GLOBAL_RetailPrice%%
%%GLOBAL_YouSave%%
</div>
</div>
Here is my CSS so far:
#checkoutoptions{
margin:auto;
padding: 10px;
border-radius: 5px;
width: 310px;
border: 1px solid gray;
}

Answer 1

Switch place on the div with review and the div with product info. Result will be like
<div class="yotpo bottomLine yotpo-medium" data-product-id="705" data-url="" data-yotpo-element-id="2">
..... content
</div>
<div class="ProductDetailsGrid">
....content
</div>
should instead be rearranged to
<div class="ProductDetailsGrid">
....content
</div>
<div class="yotpo bottomLine yotpo-medium" data-product-id="705" data-url="" data-yotpo-element-id="2">
..... content
</div>
Doesn't look exactly like you wished for, but I believe it's quite good.

Answer 2

Actually the order/structure of elements is not good. You should restructure your html and create small containers for each section.
For example.
<div class="post-meta">
<div class="share-box">
<div class="share-buttons"><!-- fb and pinterest buttons --></div>
<div class="product-price-rating"><!-- item price, rating etc --></div>
</div>
<div class="cart-box">
<!-- cart and other code -->
</div>
<div class="clearfix"></div>
</div>
Now you can easily achieve the layout you want by floating each box and clearing float before closing parent.
.share-box{
float: left;
}
.cart-box{
float: right;
}
.clearfix{
clear: both;
}

Answer 3

Add to your css class:
display: inline-block;