The text of the link text should be red (a[href] {color:red}).

The text of this paragraph should be blue (p[class="example"] { color: blue; } ).

The text of this paragraph should be red (p[class~="red"] {color:red;}).

In this paragraph is a transparent image , which background should be aqua, but the definition should not exchange the background of all paragraphs into aqua, but they should remain as white (*[src] {background-color:aqua}).

In this paragraph is bold text, which should be blue (span[class="example"]{ color: blue; }).

The text of this paragraph should be blue (p[class="example"] { color: blue; }).