Layout includes flexbox based responsive grid system with 12 columns.

Add the columns class to a container with the container class. And add any element you want with the column class inside the container. These columns will take up the space equally. You can specific the width of each column by adding class col-[1-12].

And you can add the col-gapless class to have gapless columns.

By default, Spectre grid has multi-line flexbox enabled. You can add the col-oneline class to columns to make all its child columns positioned in the same single row.

There are col-xs-[1-12], col-sm-[1-12], col-md-[1-12], col-lg-[1-12] and col-xl-[1-12] available for flexible grid across mobile, tablet and desktop viewport usage.

• For window width less than 480px, all columns will show as a single row.
• col-xs-[1-12] apply to window width smaller than or equal to 480px.
• col-sm-[1-12] apply to window width smaller than or equal to 600px.
• col-md-[1-12] apply to window width smaller than or equal to 840px.
• col-lg-[1-12] apply to window width smaller than or equal to 960px.
• col-xl-[1-12] apply to window width smaller than or equal to 1280px.

For hiding elements on specific viewport sizes, there are classes hide-xs, hide-sm, hide-md, hide-lg and hide-xl available.

• hide-xs hides elements when the window width is smaller than or equal to 480px.
• hide-sm hides elements when the window width is smaller than or equal to 600px.
• hide-md hides elements when the window width is smaller than or equal to 840px.
• hide-lg hides elements when the window width is smaller than or equal to 960px.
• hide-xl hides elements when the window width is smaller than or equal to 1280px.

For showing elements on specific viewport sizes, there are classes show-xs, show-sm, show-md, show-lg and show-xl available.

• show-xs shows elements when the window width is smaller than or equal to 480px.
• show-sm shows elements when the window width is smaller than or equal to 600px.
• show-md shows elements when the window width is smaller than or equal to 840px.
• show-lg shows elements when the window width is smaller than or equal to 960px.
• show-xl shows elements when the window width is smaller than or equal to 1280px.

Spectre also has a responsive web test tool Responsive Resizer. You can clone the GitHub Repo to use it locally or use it online.

Responsive Resizer

Navbar is a layout container that appears in the header of apps and websites.

The navbar component can include logo brand, nav links and buttons, search box or any combination of those elements. Each section with the navbar-section class will be evenly distributed in the container.

Panels are flexible view container layout with auto-expand content section.

Add a container element with the panel class. And add child elements with the panel-header, panel-nav, panel-body and/or panel-footer class. The panel-body can be auto expanded and vertically scrollable.

Empty states/blank slates are commonly used as placeholders for first time use, empty data and error screens.

An empty state component can include icons, messages (title and meta messages) and action buttons or any combination of those elements. Add empty-icon, empty-title, empty-meta or empty-action to the elements. HTML structure is exampled below.