How to Choose a Suitable CSS Selector for a Website

Inspecting Web Page Structure:

Open the target website (e.g., https://www.google.com.hk/webhp?hl=zh-CN&sourceid=cnhp/).
Right-click on the page element you wish to crawl (such as a specific text or area) and select "Inspect" to open the browser's developer tools.
Analyzing the Element:

In the developer tools, examine the HTML code of the element.
Look for attributes that uniquely identify the element or its container, such as class, id, or other attributes.
Building a CSS Selector:

Create a CSS selector based on the attributes you observed.
For example, if an element has class="content", the selector could be .content.
If the element has multiple classes, you can combine them like .class1.class2.
Testing the Selector:

In the "Console" tab of the developer tools, use document.querySelector('YOUR_SELECTOR') to test if the selector accurately selects the target element.
Applying the Selector:

Once a suitable selector is found, apply it in the selector field of your crawler configuration.
Ensure that the chosen CSS selector accurately reflects the content you wish to extract from the webpage. An incorrect selector might result in the crawler not being able to retrieve the desired data.

No repository file, test, or documentation page is named. Start by locating the crawler configuration field that accepts a CSS selector and compare it with the browser developer-tools workflow described here. Done would require a clearly scoped documentation change or an identified project behavior to fix.

Written by the indexing model from the issue text.