discourse/app/assets/stylesheets/desktop/login.scss

// shared styles used
// on both the login and
// create account modals
.login-modal,
.create-account {
  #login-buttons:not(.hidden) {
    display: flex;
    flex-direction: column;
    flex-basis: 40%;
    align-items: center;
    min-height: 175px;
    border-left: 1px solid $primary-low;
    padding: 0 15px;
    order: 2;

    button {
      margin: 0.35em;
      width: 160px;
      &:lang(zh_CN) {
        min-width: 200px;
      }
    }
  }

  .login-modal {
    #login-buttons:not(.hidden) {
      button {
        &:first-of-type {
          margin-top: 2.8em;
        }
        &:last-of-type {
          margin-bottom: 3em;
        }
      }
    }
  }

  .create-account {
    #login-buttons:not(.hidden) {
      justify-content: flex-start;
      padding-top: 2.7em;
    }
  }

  #login-form {
    flex: 1 0 auto;
    padding: 0 15px;
  }

  tr:not(.instructions) {
    td {
      display: flex;
      padding: 5px 0 0 0;
    }
  }

  tr.input label {
    margin-bottom: 0;
  }
}

// styles used on
// login modal only
.d-modal.login-modal {
  .modal-body,
  #credentials {
    display: flex;
    align-items: center;
    padding: 15px 0;

    tr {
      display: flex;
      flex-direction: column;
    }

    &.hidden {
      display: none;
    }
  }
}

// styles used on the
// create account
// modal only
.d-modal.create-account {
  .modal-body {
    display: flex;
    padding: 15px 0;
  }

  .create-account-form tr {
    display: flex;
    flex-direction: column;
  }

  .login-form {
    position: relative;
    display: flex;
    flex: 1 1 50%;
    overflow: hidden;

    &:after,
    &:before {
      content: "";
      display: block;
      height: 25px;
      position: absolute;
      width: 100%;
      pointer-events: none;
    }
    &:after {
      bottom: 0;
      background-image: linear-gradient(
        to bottom,
        rgba($secondary, 0) 0%,
        rgba($secondary, 1) 100%
      );
    }
    &:before {
      top: 0;
      background-image: linear-gradient(
        to top,
        rgba($secondary, 0) 0%,
        rgba($secondary, 1) 100%
      );
    }
    form {
      box-sizing: border-box;
      padding: 15px;
      margin-bottom: 5px;
      max-height: 450px;
      @media screen and (max-height: 768px) {
        max-height: 60vh;
      }
      overflow-x: hidden;
      overflow-y: auto;
    }

    form,
    table {
      width: 100%;
      display: block; //IE11
    }

    tr {
      display: flex;
      flex-direction: column;
      margin-top: 0.15em;
      &.password-confirmation {
        display: none;
      }
    }
  }

  tr.input {
    input,
    label {
      margin-bottom: 0;
      width: 100%;
    }
    .tip {
      max-width: 340px;
    }
  }

  .user-field {
    display: flex;
    flex-direction: column;

    &.confirm {
      margin-top: 5px;
    }

    > label {
      width: auto;
    }

    .controls {
      margin-left: 0;
    }
  }

  .invites-show {
    padding-top: 20px;

    .two-col {
      margin-top: 30px;
    }
    .col-form {
      margin-left: 200px;
      .inline-invite-img {
        display: none;
      }
    }
    form {
      .controls,
      .input {
        margin-left: 20px;
      }
      input,
      label {
        margin-bottom: 0;
      }
      .user-field .control-label:not(.checkbox-label) {
        margin-left: 20px;
      }
    }
  }

  .tos-agree {
    margin-bottom: 12px;
  }
}

.login-form {
  .tip {
    &:not(:empty) + td {
      display: none;
    }
    &:not(:empty),
    &:empty + td {
      display: block;
      min-height: 1.75em;
      width: 240px;
    }
  }
}

.password-reset,
.invites-show {
  .col-form {
    padding-left: 20px;
  }
  .col-image {
    width: 175px;
    img {
      width: 100%;
    }
  }
  h2 {
    margin-bottom: 12px;
  }
}

.password-reset {
  .col-form {
    padding-top: 40px;
  }
}