Background post transparent in dynamic blog

1. Go to blogger, dashboard.
2. Find your template, edit your css.
3. Add the next code in:

.sidebar .item{
background: #E4E4E4 !important;
}
#items.items li.item, .overview-inner, .magazine #content, .ss .item, .mosaic #content .item, .sidebar #content, #sidebar .item.selected, .timeslide .item, .viewitem-content {
background: url('http://www.blogblog.com/1kt/transparent/white80.png') !important;
}
.overview-panel .article, .magazine #feature, .viewitem-panel .article, .sidebar #content .article{
background: transparent !important;
}
#overview .overview-backdrop{
opacity: 0 !important;
}

body.sidebar, #sidebar .items{
background: url('http://themes.googleusercontent.com/image?id=1yCqzoXfTY3VhaTtS_2w31Trgk3LHk1kH1lSKIEivmW1OcaCeDlaGs_mBlO1T6KetEvus') fixed center top !important;
}

4. Edit your theme background.

• Go to your classic view.
• Right click and View Background Image

• Now your background will open and you need to copy what you see in the adress bar and replace with the code you already have in CSS:
• 
  background: url('http://themes.googleusercontent.com/image?id=1yCqzoXfTY3VhaTtS_2w31Trgk3LHk1kH1lSKIEivmW1OcaCeDlaGs_mBlO1T6KetEvus')

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