wx-qhb/unpackage/dist/dev/mp-weixin/pageA/index.wxss

.dynamic-code {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.code-container {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 20px;
  padding: 10px 20px;
  border: 2px solid #333;
  border-radius: 5px;
}
button {
  font-size: 18px;
  padding: 10px 20px;
  background-color: #007aff;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}