GTMetric tells me that my pages load slowly because my images don't specify dimensions. Images from the image library have dimensions attached, but my header image, even though it's from my library, didn't fetch with dimensions. So I figured out how to add dimensions, I think,
`<div id="banner-bg" class="cf">
<div id="banner" class="row">
<img id="headerImage" src="http://health-boundaries.com/wp-content/uploads/2013/10/NowBetterTEXTScaled.jpg"
Only when I ran GTMetrix again there were these thick red lines, top and bottom, as if they were a warning... Maybe they were b/c I ran the test so many times? I couldn't find a way to find out what they meant. Do you know?
In any case, The PageSpeed part of my score went from an A to a B, while the YSlow part went from a C to a B....
Why does one change affect each of the two scores in the opposite way?