.login-box {
  margin: 0 auto !important;
}

@media only screen and (max-width: 576px) {
  .content-wrapper > .content-dash {
    text-align: center
  }
  .over {
    margin-top: -340px;
  }
  .login-box {
    margin: 0 auto !important;
  }
}

@media only screen and (min-width: 600px) {
  .login-box, .register-box {
    margin: 0 auto !important;
  }
}

@media only screen and (min-width: 768px) {...}

@media only screen and (min-width: 992px) {...}

@media only screen and (min-width: 1200px) {
  .content-wrapper > .content {
    width: 1200px;
    margin: 0 auto;
  }
}