html - 试图让我的跨度文本加粗并使用更大的字体

Question

我试图让我的 span 变得粗体，并且使用与我的段落不同的字体。 CSS 已正确链接到我的 html。

span.bold {
  font-size: 20px;
  font-weight: 700;
}

p {
  font-size: 16px;
  color: black;
  font-family: sans-serif;
  padding: 22px;
  max-width: 60%;
  display: inline-block;
  margin-top: 0px;
}

<p align="center">
  <span="bold">Welcome to Coding Club for Web Developers</span> <br> Coding Club web developers is specifically designed to teach the basics of making a website by learning HTML, Javascript, and CSS. Using Discord, we talk with our team to learn from each other and
    to design for our upcoming projects. As a beginner or an amateur, you'll learn everything you need to know about Web Development. To practice, you can go to W3Schools, Sololearn, or Codecademy. <br>

Answer 1

你需要指定class关键字span=bold没有任何意义

span.bold {
  font-size: 20px;
  font-weight: 700;
}

p {
  font-size: 16px;
  color: black;
  font-family: sans-serif;
  padding: 22px;
  max-width: 60%;
  display: inline-block;
  margin-top: 0px;
}

<p align="center">
  <span class="bold">Welcome to Coding Club for Web Developers</span> <br> Coding Club web developers is specifically designed to teach the basics of making a website by learning HTML, Javascript, and CSS. Using Discord, we talk with our team to learn from each other and
    to design for our upcoming projects. As a beginner or an amateur, you'll learn everything you need to know about Web Development. To practice, you can go to W3Schools, Sololearn, or Codecademy. <br>