Selectutorial - CSS selectors. Descendant selectors. Descendant selectors are used to select elements that are descendants of another element in the document tree. For example, you may wish to target a specific <strong> element on the page, but not all <strong> elements. However, if you use a descendant selector, you can refine the <strong> elements that you select.
Throw is an irregular verb. Throwed is not the past tense. Threw is the past tense.
The verb's past tense usually has the same -ed form as the past participle. For many verbs, however, the past tense is irregular. An irregular past tense is not always identical to an irregular past participle: called, loved, broke, went.