页面的head部分，需引入页面的样式文件，代码如下：

<link type="text/css" rel="stylesheet" href="css/style.css">

页面的body部分，需设置好太空背景和宇航员等容器和内容，代码如下：

<div class="box-of-star1">
    <div class="star star-position1"></div>
    <div class="star star-position2"></div>
    <div class="star star-position3"></div>
    <div class="star star-position4"></div>
    <div class="star star-position5"></div>
    <div class="star star-position6"></div>
    <div class="star star-position7"></div>
</div>
<div class="box-of-star2">
    <div class="star star-position1"></div>
    <div class="star star-position2"></div>
    <div class="star star-position3"></div>
    <div class="star star-position4"></div>
    <div class="star star-position5"></div>
    <div class="star star-position6"></div>
    <div class="star star-position7"></div>
</div>
<div class="box-of-star3">
    <div class="star star-position1"></div>
    <div class="star star-position2"></div>
    <div class="star star-position3"></div>
    <div class="star star-position4"></div>
    <div class="star star-position5"></div>
    <div class="star star-position6"></div>
    <div class="star star-position7"></div>
</div>
<div class="box-of-star4">
    <div class="star star-position1"></div>
    <div class="star star-position2"></div>
    <div class="star star-position3"></div>
    <div class="star star-position4"></div>
    <div class="star star-position5"></div>
    <div class="star star-position6"></div>
    <div class="star star-position7"></div>
</div>
<div class="astronaut" data-js="astro">
    <div class="head"></div>
    <div class="arm arm-left"></div>
    <div class="arm arm-right"></div>
    <div class="body">
      <div class="panel"></div>
    </div>
    <div class="leg leg-left"></div>
    <div class="leg leg-right"></div>
    <div class="schoolbag"></div>
</div>