Greet according to the time. Set default as afternoon.

thehtml.html

<h1 class="gradient-text">
  <span>Good afternoon.</span><br>
  How can we help you today?
</h1>

thejs.js

var date = new Date();
if (date.getHours() < 12) {
    $('.gradient-text span').html('Good Morning')
}
if (date.getHours() >= 18) {
    $('.gradient-text span').html('Good Evening.')
}
if (date.getHours() >= 23) {
    $('.gradient-text span').html('Good Evening.')
}