It's time to pick up our Skeleton layout once more, this time to approach layouts larger than the standard 960px width. Skeleton throws a few curve balls our way when it comes to extending the framework - let's take a look at those difficulties and see what we can do to get around them.

Widescreen

Extending Skeleton

During my experiments I came up with a couple of things. If you're interested, here are the recalculated columns for a 1280px container:

/* #Additional - Large Screens beyond 1280px
================================================== */

    /* Note: Design for a width of 1280px */

    @media only screen and (min-width: 1280px) {
        .container                                  { width: 1280px; }
        .container .column,
        .container .columns                         { margin-left: 10px; margin-right: 10px;  }
        .column.alpha, .columns.alpha               { margin-left: 0; margin-right: 10px; }
        .column.omega, .columns.omega               { margin-right: 0; margin-left: 10px; }
        .alpha.omega                                { margin-left: 0; margin-right: 0; }

        .container .one.column,
        .container .one.columns                     { width: 60px; }
        .container .two.columns                     { width: 140px; }
        .container .three.columns                   { width: 220px; }
        .container .four.columns                    { width: 300px; }
        .container .five.columns                    { width: 380px; }
        .container .six.columns                     { width: 460px; }
        .container .seven.columns                   { width: 540px; }
        .container .eight.columns                   { width: 620px; }
        .container .nine.columns                    { width: 700px; }
        .container .ten.columns                     { width: 780px; }
        .container .eleven.columns                  { width: 860px; }
        .container .twelve.columns                  { width: 940px; }
        .container .thirteen.columns                { width: 1020px; }
        .container .fourteen.columns                { width: 1100px; }
        .container .fifteen.columns                 { width: 1180px; }
        .container .sixteen.columns                 { width: 1260px; }

        .container .one-third.column                { width: 406px; }
        .container .two-thirds.column               { width: 822px; }

        /* Offsets */
        .container .offset-by-one                   { padding-left: 80px; }
        .container .offset-by-two                   { padding-left: 160px; }
        .container .offset-by-three                 { padding-left: 240px; }
        .container .offset-by-four                  { padding-left: 320px; }
        .container .offset-by-five                  { padding-left: 400px; }
        .container .offset-by-six                   { padding-left: 480px; }
        .container .offset-by-seven                 { padding-left: 560px; }
        .container .offset-by-eight                 { padding-left: 640px; }
        .container .offset-by-nine                  { padding-left: 720px; }
        .container .offset-by-ten                   { padding-left: 800px; }
        .container .offset-by-eleven                { padding-left: 880px; }
        .container .offset-by-twelve                { padding-left: 960px; }
        .container .offset-by-thirteen              { padding-left: 1040px; }
        .container .offset-by-fourteen              { padding-left: 1120px; }
        .container .offset-by-fifteen               { padding-left: 1200px; }
    }

Also, here are the column widths recalculated as percentages. That's right, a fluid Skeleton! Be aware that nesting columns will not work in this case..

/* #Additional - Flexible Column Widths
================================================== */

        .container                                  { width: 90%; } /*whatever you want - can even be fixed if you prefer*/
        .container .column,
        .container .columns                         { margin-left: 0.78125%; margin-right: 0.78125%;  }

        .container .one.column,
        .container .one.columns                     { width: 4.6875%; }
        .container .two.columns                     { width: 10.9375%; }
        .container .three.columns                   { width: 17.1875%; }
        .container .four.columns                    { width: 23.4375%; }
        .container .five.columns                    { width: 29.6875%; }
        .container .six.columns                     { width: 35.9375%; }
        .container .seven.columns                   { width: 42.1875%; }
        .container .eight.columns                   { width: 48.4375%; }
        .container .nine.columns                    { width: 54.6875%; }
        .container .ten.columns                     { width: 60.9375%; }
        .container .eleven.columns                  { width: 67.1875%; }
        .container .twelve.columns                  { width: 73.4375%; }
        .container .thirteen.columns                { width: 79.6875%; }
        .container .fourteen.columns                { width: 85.9375%; }
        .container .fifteen.columns                 { width: 92.1875%; }
        .container .sixteen.columns                 { width: 98.4375%; }

        .container .one-third.column                { width: 31.7708%; }
        .container .two-thirds.column               { width: 65.1041%; }

        /* Offsets */
        .container .offset-by-one                   { padding-left: 6.25%; }
        .container .offset-by-two                   { padding-left: 12.5%; }
        .container .offset-by-three                 { padding-left: 18.75%; }
        .container .offset-by-four                  { padding-left: 25%; }
        .container .offset-by-five                  { padding-left: 31.25%; }
        .container .offset-by-six                   { padding-left: 37.5%; }
        .container .offset-by-seven                 { padding-left: 43.75%; }
        .container .offset-by-eight                 { padding-left: 50%; }
        .container .offset-by-nine                  { padding-left: 56.25%; }
        .container .offset-by-ten                   { padding-left: 62.5%; }
        .container .offset-by-eleven                { padding-left: 68.75%; }
        .container .offset-by-twelve                { padding-left: 75%; }
        .container .offset-by-thirteen              { padding-left: 81.25%; }
        .container .offset-by-fourteen              { padding-left: 87.5%; }
        .container .offset-by-fifteen               { padding-left: 93.75%; }

Additional Resources

Some useful links to further build on what's been covered in this video.

• Skeleton Boilerplate and Documentation
• Life Beyond 960px: Designing for Large Screens
• Putting media queries in their place by Paul Boag
• The brilliant Apache by oneedo
• Off Canvas Multi-Device Layouts by Luke Wroblewski