create a beautiful Register submit button

.btn-register {
      display: inline-block;
      padding: 10px 20px;
      background-color: #E5E5E5; /*边框色*/
      border: 1px solid #E5E5E5; /*边框颜色*/
      border-radius: 4px;
      color: #8E8E8E;
      font-size: 16px;
      font-weight: 400;
      cursor: pointer;
    }