Function collapseHandler

script.js:351–355

()

                fullContentDiv.title = 'Click to collapse';
                
                const collapseHandler = function() {
                    previewDiv.style.display = 'block';
                    fullContentDiv.style.display = 'none';
                    fullContentDiv.removeEventListener('click', collapseHandler);
                };
                
                fullContentDiv.addEventListener('click', collapseHandler);
            }