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FSCSS tutorial
FSCSS tutorial

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📊 Building a simple Wireframe Chart with FSCSS

#webdev #frontend #fscss #css

Ever wanted to make a chart that feels futuristic, minimalist, and wireframe-like?
In this post, I’ll walk through how I built a 24h Transportation Chart using FSCSS, where arrays and shorthand make things much cleaner.

👉 See the live demo on CodePen (https://codepen.io/David-Hux/pen/LEpvRXK).

🔹 The HTML Structure

We keep it simple:

  • A <section> to wrap everything

  • A <header> for the title & subtitle

  • A .chart container for the bars

  • A .legend footer

<section class="crypto-trans wireframe" aria-label="Crypto Transactions (24h)"> <header> <h3>24h PPGM — Frame</h3> <small>Gem tranf</small> </header> <div class="chart" role="img" aria-describedby="chart-desc"> <div class="bar"></div> <div class="bar"></div> <div class="bar"></div> <div class="bar"></div> <div class="bar"></div> <div class="bar"></div> <div class="bar"></div> </div> <p id="chart-desc" class="sr-only"> Bar chart showing 24-hour cryptocurrency transaction data. </p> <footer class="legend"> <span class="dot"></span> <span>GMframe = ! • NGPP = 10% steps</span> </footer> </section>
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🔹 Setting Up FSCSS Arrays

Instead of writing repetitive CSS, FSCSS lets us store values in arrays and map them onto bars.

/* Data arrays */ @arr tokens[PPGM, Wthdr, Spins, fel, NGPP, NGGM, PP] @arr heights[65%, 82%, 58%, 74%, 33%, 49%, 71%] @arr colors[#0ff, #77f, #8af, #9cf, #6df, #4ef, #2dd] @arr length[1,2,3,4,5,6,7]
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  • tokens → labels under each bar

  • heights → bar heights (in %)

  • colors → wireframe stroke color per bar

  • length → numeric index for tooltips

🔹 Layout & Base Styles

We define padding, bar widths, colors, and background panel.
The .chart grid auto-creates one column per bar.

$pad: 1.25rem; $radius: 14px; $barW: 56px; $gap: 14px; $grid: rgba(255,255,255,.08); $muted: #9fb1d9; $bg: #0b1020; $panel: rgba(255,255,255,.03); .crypto-trans { width: min(90%, 1000px); margin: 4rem auto; padding: $pad!; color: #dfe7ff; background: $bg!; border-radius: $radius!; box-shadow: 0 20px 60px rgba(0,0,0,.4), inset 0 0 0 1px rgba(255,255,255,.06); }
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🔹 Bars and Wireframe Effect

Each bar is styled with box-shadow instead of solid fill — giving a wireframe glow look.
Heights, labels, and colors are auto-assigned via the arrays.

/* Base bar style */ .bar { position: relative; height: 0; border-radius: 10px 10px 0 0; background: transparent; box-shadow: inset 0 0 0 2px currentColor, 0 0 12px rgba(0,255,255,.08); transition: height 900ms cubic-bezier(.2,.8,.2,1); } /* Heights */ .bar:nth-child(@arr.heights[]) { height: @arr.heights[]; } /* Colors */ .bar:nth-child(@arr.colors[]) { color: @arr.colors[]; } /* Labels */ .bar:nth-child(@arr.tokens[]):after { content: "@arr.tokens[]"; position: absolute; inset: auto 0 -1.6rem 0; text-align: center; font-size: .8rem; color: var(--muted); }
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🔹 Tooltips on Hover

Hover over any bar to see the token name + height.

.bar:nth-child(@arr.length[]):hover::before { $length: @arr.length[]; content: "@arr.tokens[$length!] • @arr.heights[$length!]"; position: absolute; left: 50%; bottom: calc(100% + .6rem); transform: translateX(-50%); padding: .35rem .55rem; font-size: .75rem; border-radius: 8px; background: rgba(5,12,28,.95); }
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🔹 Responsive Adjustments

On smaller screens, we shrink the bar width and hide extra bars to keep things readable.

@media (max-width: 900px) { .crypto-trans { $barW: 44px; } .chart { height: 19rem; } } @media (max-width: 700px) { .crypto-trans { $barW: 40px; } .chart { height: 17rem; } .chart .bar:nth-child(n+7) { display: none; } } @media (max-width: 520px) { .crypto-trans { $barW: 38px; } .chart { height: 15rem; } .chart .bar:nth-child(n+6) { display: none; } }
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🎯 Wrap Up

With just one HTML block + FSCSS arrays, we built a stylish wireframe crypto transactions chart that:

  • ✔ auto-assigns labels, heights, and colors

  • ✔ has tooltips on hover

  • ✔ scales down responsively

🙏 Thanks for reading

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