wiki-grav/plugins/login-oauth2/scss/login-oauth2.scss

$facebook_color: #3B5998;
$github_color: #181717;
$google_color: #4285F4;
$instagram_color: #E4405F;
$linkedin_color: #0077B5;
$label_color: #fff;

.form-oauth2 {

  p {
    font-size: inherit !important;
  }

  button {
    background: none;
    color: $label_color;
    border: 0;
    font-family: inherit;
    cursor: pointer;
    outline: inherit;
    display: flex;
    margin-bottom: 4px;
    border-radius: 3px;

    svg {
      fill: $label_color;
    }

  }

  button.facebook {
    background: $facebook_color;
    &:hover {
      background: darken($facebook_color, 10%);
    }
  }

  button.github {
    background: $github_color;
    &:hover {
      background: lighten($github_color, 10%);
    }
  }

  button.google {
    background: $google_color;
    &:hover {
      background: darken($google_color, 10%);
    }
  }

  button.instagram {
    background: $instagram_color;
    &:hover {
      background: darken($instagram_color, 10%);
    }
  }

  button.linkedin {
    background: $linkedin_color;
    &:hover {
      background: darken($linkedin_color, 10%);
    }
  }

  &.square-style {
    button {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 10px;
      min-width: 120px;
    }

    svg {
      width: 36px;
      height: 36px;
    }

    span {
      display: block;
      font-size: 110%;
      margin: 0.5rem 0 0;
    }
  }

  &.button-style, &.row-style {
    button {
      flex-direction: row;
      align-items: center;
      justify-content: center;
      min-width: 150px;
      width: 100%;
      padding: 10px;
    }
    svg {
      width: 24px;
      height: 24px;
      vertical-align: middle;
    }

    span {
      display: inline-block;
      font-size: 110%;
      margin: 0 0 0 10px;
      vertical-align: middle;
      min-width: 100px;
      text-align: left;
    }
  }

  .oauth2-or {
    display: flex;
    margin: 1rem 0;

    span {
      display: block;
      margin: 0;


      &.line {
        border-bottom: 2px solid #eee;
        flex-grow: 1;
      }

      &.or {
        padding: 0 15px;
        margin-bottom: -15px;
        font-size: 150%;
        color: #999;
        text-align: center;
      }
    }
  }


}

#admin-login .form-oauth2 {
  text-align: center;

  padding-top: 1rem;

  > p:first-child {
    display: none;
  }

  .oauth2-or {
    opacity: 0.6;
    margin-bottom: -0.5rem;

    span.line {
      opacity: 0.2;
      border-bottom-width: 1px;
    }
  }
}