A layer in SharePoint Designer is basically a <div> tag that's absolutely positioned inside the Web page. You can drag and drop layers anywhere around the Web page with relative ease and thus layers provide a very simple design surface for laying out Web pages.
You use the Layers task pane shown in Figure 5.24 to work with layers. You access this task pane by choosing Task Panes Layers.
To create a new layer and configure its settings, follow these steps:
Open a Web page and then place the cursor where you want to insert the layer. To easily understand the layer positioning, choose View Formatting Marks Show.
Choose View Formatting Marks and ensure that all menu options except Show and Positioned Absolute are disabled.
Click the Insert Layer button in the Layers task pane. A layer (a <div> tag) is created on the Web page. Also, the anchor formatting mark appears, showing the location where the layer was actually inserted. The ...