Practical GIS

Styling the elements

Although the syntax is the same, regular CSS differs from GeoServer's CSS. We already know that CSS rules consist of selectors and declaration blocks, which contain declarations in the form of key-value pairs. There are three kinds of basic selectors we should be able to use in CSS. We can style every tag in an HTML document by supplying the tag's name in a selector. For example, a div selector selects every <div> element in the document. We can constrict the selection to a specific class using .classname and to a specific ID using #idname. Selection based on multiple criteria (the AND logical operator) can be achieved by writing the corresponding selectors together. By writing div.map, we select every <div> element that ...