我正试图让我的注册文本在我的页面内对齐。我知道这很简单，但我完全迷路了。
我需要_sign居中，h1，h2也居中。
中心文本，什么也没发生，每一个其他的解决方案，我看到类似的问题只是没有做什么或推我的注册文本进一步下降

/*already a user section*/

.main_register {
  background-color: #000000;
}

.main__container_register {
  display: grid;
  grid-template-columns: ifr ifr;
  align-items: center;
  justify-self: center;
  margin: 0 auto;
  height: 80vh;
  background-color: #000000;
  z-index: 1;
  width: 30%;
  max-width: 1270px;
  padding: 0 50px;
}

.main__content_register h1 {
  font-size: 1.3rem;
  background-color: #ff8177;
  background-image: linear-gradient(to top, #ff0844 0%, #ffb199 100%);
  background-size: 100%;
  -webkit-background-clip: text;
  -moz-background-clip: text;
  -webkit-text-fill-color: transparent;
  -moz-text-fill-color: transparent;
}

.main__content_register h2 {
  font-size: 1rem;
  background-color: #ff8177;
  background-image: linear-gradient(to top, #b721ff 0%, #21d4fd 100%);
  background-size: 100%;
  -webkit-background-clip: text;
  -moz-background-clip: text;
  -webkit-text-fill-color: transparent;
  -moz-text-fill-color: transparent;
}

.main__content_register p {
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
}

.main__btn_register {
  font-size: 0.8rem;
  background-image: linear-gradient(to top, #f77062 0%, #fe5196 100%);
  padding: 14px 32px;
  border: none;
  border-radius: 4px;
  color: #fff;
  margin-top: 2rem;
  cursor: pointer;
  position: relative;
  transition: all 0.35s;
  outline: none;
}

.main__btn_register a {
  position: relative;
  z-index: 2;
  color: #fff;
  text-decoration: none;
}

.main__btn_register::after {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: #4837ff;
  transition: all 0.35s;
  border-radius: 4px;
}

.main__btn_register:hover {
  color: #fff
}

.main__btn_register:hover:after {
  width: 100%;
}

.main_img_register--container {
  text-align: right;
}

#main__img_signup {
  height: 20%;
  width: 30%;
}

/* Actual registry*/

.main__content_sign {
  text-align: center;
}

.main__container_sign {
  display: grid;
  grid-template-columns: ifr ifr;
  align-items: center;
  justify-self: center;
  margin: 0 auto;
  height: 80vh;
  background-color: #000000;
  z-index: 1;
  width: 100%;
  max-width: 1270px;
  padding: 0 50px;
}

.main__sign {
  background-color: #6e50f5;
}

.main__container_sign {
  float: left;
  padding-right: 3000px;
  padding-bottom: 2000px;
}

.main__content_sign h1 {
  font-size: 1.3rem;
  background-color: #ff8177;
  background-image: linear-gradient(to top, #ff0844 0%, #ffb199 100%);
  background-size: 100%;
  -webkit-background-clip: text;
  -moz-background-clip: text;
  -webkit-text-fill-color: transparent;
  -moz-text-fill-color: transparent;
}

.main__content_sign h2 {
  font-size: 1rem;
  background-color: #ff8177;
  background-image: linear-gradient(to top, #b721ff 0%, #21d4fd 100%);
  background-size: 100%;
  -webkit-background-clip: text;
  -moz-background-clip: text;
  -webkit-text-fill-color: transparent;
  -moz-text-fill-color: transparent;
}

.main__content_sign p {
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
}

<!--Hero section-->
<div class="main_register">
  <div class="main__container_register">
    <div class="main__content_register">
      <h1>Stock IO </h1>
      <h2>Already A User?</h2>
      <p>Sign In Below</p>
      <button class="main__btn_register"><a href="/login.html">Login</a></button>
    </div>
    <div class="main__img_register--container">
      <img src="img/signup.svg" alt="pic" id="main__img_signup">
    </div>
  </div>
</div>

<div class="main_sign">
  <div class="main__container_sign">
    <div class="main__content_sign">
      <h1>Welcome To Stock.IO </h1>
      <h2>Register Below To Gain Full Access To Our Site</h2>
      <p>S</p>
    </div>
  </div>
</div>