var link = document.querySelector(".cta a")
undefined
link
<a href="#" target="_blank">Book Now!</a>
link.style.color = "orange";
"orange"
link.style['background-color'] = "pink";
"pink"
link.style.borderColor = "purple";
"purple"
link.style.cssText = "";
""
link.setAttribute("style", "color: grey; background-color: indigo");
undefined