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SmookyDev's hover button

HTML, CSS or Tailwind, and a little JavaScript. One button or a group of up to six.

By SmookyDev

Remix button

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Buttons only: no full pages, forms, cards or navigation. Put scripts in the JavaScript tab. Tailwind uses utilities from HTML and JavaScript; use complete class names. Custom CSS supports plain CSS, without @apply, imports or plugins.

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Try Tab, Enter and Space in the preview. Check the focus ring, hover and disabled states, then enable Reduce motion. These checks are guidance, not an accessibility certification.

Explore freely here. Remix to publish your version with credit to the creator.

About SmookyDev's hover button

SmookyDev's hover button is an animated Tailwind CSS v4 button by SmookyDev. Preview the interaction, customize its HTML, styles and JavaScript, or download the files with creator credit.

Effects and categories
Hover effects
Using this example
Copy the HTML or download index.html, style.css and app.js. Test keyboard focus, motion and contrast in your own project.

Usage, Tailwind and licensing questions

Read the source files

HTML

<button class="relative px-8 py-2 rounded-md bg-white isolation-auto z-10 border-2 border-lime-500
        before:absolute before:w-full before:transition-all before:duration-700 before:hover:w-full before:-right-full before:hover:right-0 before:rounded-full  before:bg-lime-500 before:-z-10  before:aspect-square before:hover:scale-150 overflow-hidden before:hover:duration-700">Hover Me</button>

CSS

/*! tailwindcss v4.3.3 | MIT License | https://tailwindcss.com */
@layer properties;
@layer theme, base, components, utilities;
@layer theme {
  :root, :host {
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
      "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
      "Segoe UI Symbol", "Noto Color Emoji";
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
      "Courier New", monospace;
    --color-lime-500: oklch(76.8% 0.233 130.85);
    --color-white: #fff;
    --spacing: 0.25rem;
    --radius-md: 0.375rem;
    --default-transition-duration: 150ms;
    --default-transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    --default-font-family: var(--font-sans);
    --default-mono-font-family: var(--font-mono);
  }
}
@layer base {
  *, ::after, ::before, ::backdrop, ::file-selector-button {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border: 0 solid;
  }
  html, :host {
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    tab-size: 4;
    font-family: var(--default-font-family, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");
    font-feature-settings: var(--default-font-feature-settings, normal);
    font-variation-settings: var(--default-font-variation-settings, normal);
    -webkit-tap-highlight-color: transparent;
  }
  hr {
    height: 0;
    color: inherit;
    border-top-width: 1px;
  }
  abbr:where([title]) {
    -webkit-text-decoration: underline dotted;
    text-decoration: underline dotted;
  }
  h1, h2, h3, h4, h5, h6 {
    font-size: inherit;
    font-weight: inherit;
  }
  a {
    color: inherit;
    -webkit-text-decoration: inherit;
    text-decoration: inherit;
  }
  b, strong {
    font-weight: bolder;
  }
  code, kbd, samp, pre {
    font-family: var(--default-mono-font-family, ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);
    font-feature-settings: var(--default-mono-font-feature-settings, normal);
    font-variation-settings: var(--default-mono-font-variation-settings, normal);
    font-size: 1em;
  }
  small {
    font-size: 80%;
  }
  sub, sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
  }
  sub {
    bottom: -0.25em;
  }
  sup {
    top: -0.5em;
  }
  table {
    text-indent: 0;
    border-color: inherit;
    border-collapse: collapse;
  }
  :-moz-focusring:where(:not(iframe)) {
    outline: auto;
  }
  progress {
    vertical-align: baseline;
  }
  summary {
    display: list-item;
  }
  ol, ul, menu {
    list-style: none;
  }
  img, svg, video, canvas, audio, iframe, embed, object {
    display: block;
    vertical-align: middle;
  }
  img, video {
    max-width: 100%;
    height: auto;
  }
  button, input, select, optgroup, textarea, ::file-selector-button {
    font: inherit;
    font-feature-settings: inherit;
    font-variation-settings: inherit;
    letter-spacing: inherit;
    color: inherit;
    border-radius: 0;
    background-color: transparent;
    opacity: 1;
  }
  :where(select:is([multiple], [size])) optgroup {
    font-weight: bolder;
  }
  :where(select:is([multiple], [size])) optgroup option {
    padding-inline-start: 20px;
  }
  ::file-selector-button {
    margin-inline-end: 4px;
  }
  ::placeholder {
    opacity: 1;
  }
  @supports (not (-webkit-appearance: -apple-pay-button))  or (contain-intrinsic-size: 1px) {
    ::placeholder {
      color: currentcolor;
      @supports (color: color-mix(in lab, red, red)) {
        color: color-mix(in oklab, currentcolor 50%, transparent);
      }
    }
  }
  textarea {
    resize: vertical;
  }
  ::-webkit-search-decoration {
    -webkit-appearance: none;
  }
  ::-webkit-date-and-time-value {
    min-height: 1lh;
    text-align: inherit;
  }
  ::-webkit-datetime-edit {
    display: inline-flex;
  }
  ::-webkit-datetime-edit-fields-wrapper {
    padding: 0;
  }
  ::-webkit-datetime-edit, ::-webkit-datetime-edit-year-field, ::-webkit-datetime-edit-month-field, ::-webkit-datetime-edit-day-field, ::-webkit-datetime-edit-hour-field, ::-webkit-datetime-edit-minute-field, ::-webkit-datetime-edit-second-field, ::-webkit-datetime-edit-millisecond-field, ::-webkit-datetime-edit-meridiem-field {
    padding-block: 0;
  }
  ::-webkit-calendar-picker-indicator {
    line-height: 1;
  }
  :-moz-ui-invalid {
    box-shadow: none;
  }
  button, input:where([type="button"], [type="reset"], [type="submit"]), ::file-selector-button {
    appearance: button;
  }
  ::-webkit-inner-spin-button, ::-webkit-outer-spin-button {
    height: auto;
  }
  [hidden]:where(:not([hidden="until-found"])) {
    display: none !important;
  }
}
@layer utilities {
  .relative {
    position: relative;
  }
  .isolation-auto {
    isolation: auto;
  }
  .z-10 {
    z-index: 10;
  }
  .overflow-hidden {
    overflow: hidden;
  }
  .rounded-md {
    border-radius: var(--radius-md);
  }
  .border-2 {
    border-style: var(--tw-border-style);
    border-width: 2px;
  }
  .border-lime-500 {
    border-color: var(--color-lime-500);
  }
  .bg-white {
    background-color: var(--color-white);
  }
  .px-8 {
    padding-inline: calc(var(--spacing) * 8);
  }
  .py-2 {
    padding-block: calc(var(--spacing) * 2);
  }
  .before\:absolute::before {
    content: var(--tw-content);
    position: absolute;
  }
  .before\:-right-full::before {
    content: var(--tw-content);
    right: -100%;
  }
  .before\:-z-10::before {
    content: var(--tw-content);
    z-index: calc(10 * -1);
  }
  .before\:aspect-square::before {
    content: var(--tw-content);
    aspect-ratio: 1 / 1;
  }
  .before\:w-full::before {
    content: var(--tw-content);
    width: 100%;
  }
  .before\:rounded-full::before {
    content: var(--tw-content);
    border-radius: calc(infinity * 1px);
  }
  .before\:bg-lime-500::before {
    content: var(--tw-content);
    background-color: var(--color-lime-500);
  }
  .before\:transition-all::before {
    content: var(--tw-content);
    transition-property: all;
    transition-timing-function: var(--tw-ease, var(--default-transition-timing-function));
    transition-duration: var(--tw-duration, var(--default-transition-duration));
  }
  .before\:duration-700::before {
    content: var(--tw-content);
    --tw-duration: 700ms;
    transition-duration: 700ms;
  }
  .before\:hover\:right-0::before {
    content: var(--tw-content);
    &:hover {
      @media (hover: hover) {
        right: 0px;
      }
    }
  }
  .before\:hover\:w-full::before {
    content: var(--tw-content);
    &:hover {
      @media (hover: hover) {
        width: 100%;
      }
    }
  }
  .before\:hover\:scale-150::before {
    content: var(--tw-content);
    &:hover {
      @media (hover: hover) {
        --tw-scale-x: 150%;
        --tw-scale-y: 150%;
        --tw-scale-z: 150%;
        scale: var(--tw-scale-x) var(--tw-scale-y);
      }
    }
  }
  .before\:hover\:duration-700::before {
    content: var(--tw-content);
    &:hover {
      @media (hover: hover) {
        --tw-duration: 700ms;
        transition-duration: 700ms;
      }
    }
  }
}
@property --tw-border-style {
  syntax: "*";
  inherits: false;
  initial-value: solid;
}
@property --tw-content {
  syntax: "*";
  initial-value: "";
  inherits: false;
}
@property --tw-duration {
  syntax: "*";
  inherits: false;
}
@property --tw-scale-x {
  syntax: "*";
  inherits: false;
  initial-value: 1;
}
@property --tw-scale-y {
  syntax: "*";
  inherits: false;
  initial-value: 1;
}
@property --tw-scale-z {
  syntax: "*";
  inherits: false;
  initial-value: 1;
}
@layer properties {
  @supports ((-webkit-hyphens: none) and (not (margin-trim: inline))) or ((-moz-orient: inline) and (not (color:rgb(from red r g b)))) {
    *, ::before, ::after, ::backdrop {
      --tw-border-style: solid;
      --tw-content: "";
      --tw-duration: initial;
      --tw-scale-x: 1;
      --tw-scale-y: 1;
      --tw-scale-z: 1;
    }
  }
}