blockquote for style.css applicable to wordpress and blogger sites

Blockquotes are useful in blogging or any website because with the help of blockquote you can highlight the text in box with border or borderless as per your choice.
Many readers of my blog have asked the question about how to have a common blockquote which can be applicable to wordpress as well as blogger site.
The answer is almost as all style.css blockquote format works. I am sharing my own blockquote snippet which I use in my wordpress and blogger sites.

.post blockquote {
color:black;
border-top: 2px solid #000000;
border-left: 2px solid #000000;
border-right: 1px solid #000000;
border-bottom: 1px solid #000000;
background: #D5FFFE;
margin: 6px 0px 6px 0px;
padding: 8px 8px 8px 8px;
font-size: 1em;
line-height:1.4em;
}

This is an eg. of blockquote
Just for your reference