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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

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About the <head>

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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HTML 

              
                .main-container
  .tab-container
    .tab-header
      .tab-shine
      each _, i in Array(3).fill(0)
        .tab(class=i == 1 ? 'active' : '') Tab #{i+1}
!

CSS 

              
                :root {
  --dark: #000;
  --primary: #150050;
  --secondary: #3f0071;
}

$dark: #000;
$primary: #150050;
$secondary: #3f0071;
$tertiary: #610094;

$dark100: #00000000;
$primary100: #15005000;
$secondary100: #3f007100;
$tertiary100: #61009400;

$dark200: #000000aa;
$primary200: #150050aa;
$secondary200: #3f0071aa;
$tertiary200: #610094aa;

$light: #dadada;

body {
  overflow: hidden;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Inter Tight";
  color: $light;
}

.main-container {
  height: 100vh;
  width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  background: radial-gradient(circle at 5% 45%, $dark 20%, $primary100 60%),
    radial-gradient(circle at 50% 60%, $dark 40%, $secondary100 80%),
    radial-gradient(circle at 25% 40%, $tertiary 42%, $dark100 60%),
    radial-gradient(circle at 35% 95%, $dark100 30%, $primary 60%),
    radial-gradient(circle at 100% 40%, $tertiary 38%, $dark100 70%),
    radial-gradient(circle at 10% 70%, $tertiary 38%, $dark100 70%);
}

.tab-container {
  --shine-start: 0%;
  --shine-mid: 50%;
  --shine-end: 100%;

  width: 500px;
  max-width: calc(100vw - 40px);
  // height: 400px;
  overflow: hidden;
  border-radius: 5px;
  background: linear-gradient(to bottom, #101010, $dark100);
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 600px 40px $secondary200;
}

.tab-header {
  display: flex;
  position: relative;
  overflow: hidden;
  justify-content: center;
  border-top: 1px solid;
  border-width: 2px;
  border-image-source: linear-gradient(
    to right,
    $secondary100 var(--shine-start),
    $secondary var(--shine-mid),
    $secondary100 var(--shine-end)
  );
  border-image-slice: 1;
  border-bottom: 1px solid $secondary200;
  transition: 0.25s;
  &:before {
    content: "";
    position: absolute;
    width: 100%;
    height: 40%;
    background: #ffffff05;
  }
  .tab-shine {
    position: absolute;
    left: 50%;
    top: -60%;
    transform: translateX(-50%);
    height: 120px;
    width: 280px;
    background: radial-gradient($secondary200, $secondary100 60%);
    transition: 0.25s;
  }

  .tab {
    position: relative;
    z-index: 1;
    padding: 26px 40px;
    cursor: pointer;
    opacity: 0.4;
    transition: 0.25s;

    &:hover {
      opacity: 0.8;
    }

    &.active {
      opacity: 1;
    }
  }
}
!

JS 

              
                const select = (selector: string) => document.querySelector(selector);
const selectAll = (selector: string) => document.querySelectorAll(selector);

const tabs = selectAll(".tab");
const shine = select(".tab-shine");
const headerContainer = select(".tab-header");

const setActive = (el: HTMLElement) => {
  const tabCenter =
    (el.offsetLeft + el.offsetWidth / 2) / headerContainer.offsetWidth;
  shine.style.left = `${tabCenter * 100}%`;

  headerContainer.style.setProperty(
    "--shine-start",
    `${(tabCenter - 0.5) * 100}%`
  );
  headerContainer.style.setProperty("--shine-mid", `${tabCenter * 100}%`);
  headerContainer.style.setProperty(
    "--shine-end",
    `${(tabCenter + 0.5) * 100}%`
  );

  const currentActive = select(".active");
  currentActive.classList.remove("active");
  el.classList.add("active");
};

tabs.forEach((tab) => {
  tab.addEventListener("click", (e) => {
    setActive(e.target);
  });
});
!
999px

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