How do I change the heading separately?-CodePudding

I learn JavaScript and I am trying to change the "h1 element without affecting the break element.

A button gives the "option" to change the city, which will present three prompts asking for first name, city, and temperature, resulting in "Hi ${firstName}! It is currently ${temperature}° in ${location}".

I want to change the emoji based on the temperature. When it's below 60°, the freezing emoji shows on top of the text, which would change .

My functions change the heading of the innerHTML. I have also attempted to assign separate classes, but my placements are where I am lost. I know how to change the heading as a whole but that wouldn't separate the Emoji and the text.

Here is my code:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Weather App</title>
    <style>
      h1,
      h2,
      h3 {
        text-align: center;
        font-family: Helvetica, Arial, sans-serif;
      }

      h1 {
        color: #1a64d6;
        font-size: 34px;
        line-height: 48px;
        margin: 0;
      }

      h2 {
        margin: 0;

        font-size: 34px;
        line-height: 48px;
        font-weight: 400;
      }

      ul {
        padding: 0;
      }

      li {
        list-style: none;
        text-align: center;
        padding: 10px 0;
        border-radius: 10px;
        transition: all 200ms ease-in-out;
        max-width: 400px;
        margin: 0 auto;
      }

      li:hover {
        background: #fffbef;
      }

      p {
        font-size: 18px;
        opacity: 0.7;
        text-align: center;
        font-family: monospace;
      }

      button {
        display: block;
        margin: 20px auto;
        border: 1px solid #1a64d6;
        background: #1a64d6;
        color: #fff;
        font-size: 16px;
        line-height: 22px;
        padding: 16px 24px;
        border-radius: 30px;
        transition: all 200ms ease;
        box-shadow: rgba(37, 39, 89, 0.08) 0px 8px 8px 0;
        cursor: pointer;
      }

      button:hover {
        background: white;
        color: #1a64d6;
        border: 1px solid #1a64d6;
      }
    </style>
  </head>
  <body>
    <h1>
      <span >