function debounce(func, wait, immediate) {
	var timeout;
	return function() {
		var context = this, args = arguments;
		var later = function() {
			timeout = null;
			if (!immediate) func.apply(context, args);
		};
		var callNow = immediate && !timeout;
		clearTimeout(timeout);
		timeout = setTimeout(later, wait);
		if (callNow) func.apply(context, args);
	};
};




function breakAfterFirstWord(){
    const h1 = document.querySelector("h1").innerHTML;
    const splittedh1 = h1.split(" ");
    if(window.innerWidth < 768 && splittedh1.length === 2){
        splittedh1.splice(1, 0, '</br>');
        document.querySelector("h1").innerHTML = splittedh1.join(' ');
    } else if(window.innerWidth > 767 && splittedh1.length === 3){
        splittedh1.splice(1, 1);
        document.querySelector("h1").innerHTML = splittedh1.join(' ');
    }
}

var myEfficientFn = debounce(function() {
	breakAfterFirstWord();
}, 250);

window.addEventListener('resize', myEfficientFn);

breakAfterFirstWord()