Warnings represents potential errors. They may have false-positives.

• W001 (<meta charset="UTF-8">)
• W002 (X-UA-Compatible)
• W003 (<meta name="viewport">)
• W004 (deprecated remote modal)
• W005 (jQuery)
• W006 (disabled tooltip or popover)
• W007 (<button> missing type attribute)
• W008 (tooltip/popover in .btn-group requires container: 'body')
• W009 (empty spacer column)
• W010 (.pull-left or .pull-right in .media)
• W011 (Reserved for #188 / #189)
• W012 (navbar missing inner container)
• W013 (Outdated version of Bootstrap)
• W014 (Incorrect carousel targets)
• W015 (Unreleased major version of Bootstrap)
• W016 (Perhaps you meant to use the [disabled] attribute instead of the .disabled class on a .btn)
• W017 (<input> missing type attribute)
• W018 (.col-*-12 classes used alone are not useful)

Errors represent definite errors. Under the assumptions explained in the "Caveats" section of the README, they should never have any false-positives.

• E001 (HTML5 DOCTYPE required)
• E002 (Bootstrap v2 grid)
• E003 (misplaced .row)
• E004 (nested containers)
• E005 (.row.col-*-*)
• E006 (non-<input> .form-control within .input-group)
• E007 (bootstrap.js & bootstrap.min.js)
• E008 was replaced by W008
• E009 (forgot about input-group-sm/input-group-lg)
• E010 (input group with multiple .form-controls)
• E011 (.form-group.input-group)
• E012 (.input-group.col-*-*)
• E013 (row children must be columns)
• E014 (column parent must be a row)
• E015 (multiple add-ons on a single side of an input group)
• E016 (dropdown within button group)
• E017 (.checkbox)
• E018 (.radio)
• E019 (.checkbox-inline)
• E020 (.radio-inline)
• E021 (.active & [checked])
• E022 (modal within another component)
• E023 (wrong .panel-body parent)
• E024 (wrong .panel-heading parent)
• E025 (wrong .panel-footer parent)
• E026 (wrong .panel-title parent)
• E027 (table.table-responsive)
• E028 (.form-control-feedback missing .has-feedback)
• E029 (redundant grid column classes)
• E030 (.glyphicon-* without .glyphicon)
• E031 (.glyphicon on element with content or children)
• E032 (incorrectly structured modal markup)
• E033 (.alert with dismiss button missing .alert-dismissible)
• E034 (.close button is present but isn't first element in .alert)
• E035 (.form-horizontal or .form-inline on .form-group)
• E036 (Multiple .btns or .dropdown-menus in one .input-group-btn)
• E037 (.col-*-0 classes)
• E038 (.media-left/.media-right outside of .media)
• E039 (.navbar-left/.navbar-right outside of .navbar)
• E040 (.modal.hide)
• E041 (incorrectly structured carousel markup)
• E042 (.form-control on wrong element or <input> of wrong type)
• E043 (btn classes on <a>s within .navbar-navs)
• E044 (.input-group must have a .form-control and either an add-on or a btn)
• E045 (.img-responsive on non-<img>)
• E046 (.modal missing [tabindex])
• E047 (Used .btn on something other than an <a>/<button>/<input>/<label>)
• E048 (.modal missing [role="dialog"])
• E049 (.modal-dialog missing [role="document"])
• E050(.form-groups cannot be nested)
• E051(.pull-right and .pull-left classes, and manual style attributes with float: left or float: right are not allowed on .col-*-* elements)
• E052(.pull-right and .pull-left classes, and manual style attributes with float: left or float: right are not allowed on .row elements)

Warnings represents potential errors. They may have false-positives.

• W001 (<meta charset="UTF-8">)
• W002 (X-UA-Compatible)
• W003 (<meta name="viewport">)
• W004 (deprecated remote modal)
• W005 (jQuery)
• W006 (disabled tooltip or popover)
• W007 (<button> missing type attribute)
• W008 (tooltip/popover in .btn-group requires container: 'body')
• W009 (empty spacer column)
• W010 (.pull-left or .pull-right in .media)
• W011 (Reserved for #188 / #189)
• W012 (navbar missing inner container)
• W013 (Outdated version of Bootstrap)
• W014 (Incorrect carousel targets)
• W015 (Unreleased major version of Bootstrap)
• W016 (Perhaps you meant to use the [disabled] attribute instead of the .disabled class on a .btn)
• W017 (<input> missing type attribute)
• W018 (.col-*-12 classes used alone are not useful)

Errors represent definite errors. Under the assumptions explained in the "Caveats" section of the README, they should never have any false-positives.

• E001 (HTML5 DOCTYPE required)
• E002 (Bootstrap v2 grid)
• E003 (misplaced .row)
• E004 (nested containers)
• E005 (.row.col-*-*)
• E006 (non-<input> .form-control within .input-group)
• E007 (bootstrap.js & bootstrap.min.js)
• E009 (forgot about input-group-sm/input-group-lg)
• E010 (input group with multiple .form-controls)
• E011 (.form-group.input-group)
• E012 (.input-group.col-*-*)
• E013 (row children must be columns)
• E014 (column parent must be a row)
• E015 (multiple add-ons on a single side of an input group)
• E016 (dropdown within button group)
• E017 (.checkbox)
• E018 (.radio)
• E019 (.checkbox-inline)
• E020 (.radio-inline)
• E021 (.active & [checked])
• E022 (modal within another component)
• E023 (wrong .panel-body parent)
• E024 (wrong .panel-heading parent)
• E025 (wrong .panel-footer parent)
• E026 (wrong .panel-title parent)
• E027 (table.table-responsive)
• E028 (.form-control-feedback missing .has-feedback)
• E029 (redundant grid column classes)
• E030 (.glyphicon-* without .glyphicon)
• E031 (.glyphicon on element with content or children)
• E032 (incorrectly structured modal markup)
• E033 (.alert with dismiss button missing .alert-dismissible)
• E034 (.close button is present but isn't first element in .alert)
• E035 (.form-horizontal or .form-inline on .form-group)
• E037 (.col-*-0 classes)
• E038 (.media-left/.media-right outside of .media)
• E039 (.navbar-left/.navbar-right outside of .navbar)
• E040 (.modal.hide)
• E041 (incorrectly structured carousel markup)
• E042 (.form-control on wrong element or <input> of wrong type)
• E043 (btn classes on <a>s within .navbar-navs)
• E044 (.input-group must have a .form-control and either an add-on or a btn)
• E045 (.img-responsive on non-<img>)
• E046 (.modal missing [tabindex])
• E047 (Used .btn on something other than an <a>/<button>/<input>/<label>)
• E048 (.modal missing [role="dialog"])
• E049 (.modal-dialog missing [role="document"])
• E050(.form-groups cannot be nested)
• E051(.pull-right and .pull-left classes, and manual style attributes with float: left or float: right are not allowed on .col-*-* elements)
• E052(.pull-right and .pull-left classes, and manual style attributes with float: left or float: right are not allowed on .row elements)