Selenium cannot locate the element

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in the process of learning selenium, I learned many methods and codes for locating elements.
but when trying to write a nike official website, the dynamic id cannot be located, and other elements are used to locate it, but the login button still cannot be located. Please give me some advice

.

use xpath or cssselector


use type, or value positioning. Find_element_by_xpath ("/ / input [@ type='button']")

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bf454a-3a2a8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf454a-3a2a8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?