You can use display: block
Example :
<!DOCTYPE html>
<html>
<body>
<p id="demo">Lorem Ipsum</p>
<button type="button"
onclick="document.getElementById('demo').style.display='none'">Click Me!</button>
<button type="button"
onclick="document.getElementById('demo').style.display='block'">Click Me!</button>
</body>
</html>