body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #f5f5f5;
}

.content {
  text-align: center;
  width: 100%;
  max-width: 600px;
  padding: 15px;
}

h1 {
  margin-bottom: .5em;
  font-size: 24px;
}

h2 {
  margin-bottom: 1em;
  font-size: 20px;
  font-weight: normal;
}

h3 {
  margin-bottom: .5em;
  font-size: 20px;
  color: red; /* 设置提示的颜色为红色 */
}

.progress-container {
  background: #ddd;
  border-radius: 5px;
  overflow: hidden;
  margin-top: 20px;
}

.progress-bar {
  width: 0;
  height: 20px;
  background-color: #007bff;
  /* animation: progressAnimation 2s linear forwards; 去掉这行用于动画的代码 */
}

p {
  margin-top: 10px;
  font-size: 14px;
  color: #666;
}

/* @keyframes progressAnimation {
  from { width: 0; }
  to { width: 100%; }
} 去掉这个用于动画的部分 */

@media (max-width: 768px) {
  h1 {
    font-size: 20px;
  }

  h2 {
    font-size: 16px;
  }
  
  h3 {
    font-size: 16px;
    color: red; /* 设置提示的颜色为红色 */
  }

  p {
    font-size: 12px;
  }

  .progress-container {
    height: 10px;
    border-radius: 3px;
  }
}