updated Pinterest feed

Here is the updated Pinterest feed (the most recent update of the Pinterest) for your comments
These styles should be written as follow:

```scss
%pinterest_base {
	float: left;
	margin: auto;
	padding: 0;
}

.pinterest {
	.row1 {
		@extend %pinterest_base;
		width: 98.5%;
	}

	.cols2 {
		@extend %pinterest_base;
		width: 49.9%;
	}

	.cols3 {
		@extend %pinterest_base;
		width: 59.9%;
	}
	.colx3 {
		@extend %pinterest_base;
		width: 19.9%;
	}

	.myimg {
		display: block; 
		margin: 5px 0 0 0; 
		text-align: center;
	}
}

```