If the element has an ID tag then you can use code below to click it.

FeatureContext.php

use Behat\MinkExtension\Context\MinkContext;

class FeatureContext extends MinkContext
{
    /**
     * @When /^I click an element with ID "([^"]*)"$/
     *
     * @param $id
     * @throws \Exception
     */
    public function clickElementWithGivenId($elementId)
    {
        $session = $this->getSession();
        $page = $session->getPage();

        $element = $page->find('css', '#' . $elementId);

        if (null === $element) {
            throw new \InvalidArgumentException(sprintf('Could not evaluate CSS: "%s"', $elementId));
        }

        $element->click();
    }
}

#behat #css selector #css