address, blockquote, h1, h2, h3, h4, h5, h6, p, pre { outline: 1px solid #f00 !important; }
dd, dl, dt, ol, ul { outline: 1px solid #0f0 !important; }
div, form, table { outline: 1px solid #00f !important; }

address:before { content: "<address>" !important; }
blockquote:before { content: "<blockquote>" !important; }
div:before { content: "<div>" !important; }
dl:before { content: "<dl>" !important; }
form:before { content: "<form>" !important; }
h1:before { content: "<h1>" !important; }
h2:before { content: "<h2>" !important; }
h3:before { content: "<h3>" !important; }
h4:before { content: "<h4>" !important; }
h5:before { content: "<h5>" !important; }
h6:before { content: "<h6>" !important; }
ol:before { content: "<ol>" !important; }
p:before { content: "<p>" !important; }
pre:before { content: "<pre>" !important; }
table:before { content: "<table>" !important; }
ul:before { content: "<ul>" !important; }
    