---
category: Display
created: '2019-12-04'
description: Create an accordion with CSS flexbox
keywords: css accordion, css flexbox
thumbnail: /assets/css-layout/thumbnails/accordion.png
title: Accordion
---

## HTML

```html index.html
<!-- Container -->
<div class="accordion">
    <!-- Collapsed item -->
    <div class="accordion__item accordion__item--collapsed">
        <!-- Heading -->
        <div class="accordion__header">
            <!-- The toggle icon -->
            <div class="accordion__toggle">...</div>

            <!-- The title -->
            <div class="accordion__title">...</div>
        </div>

        <!-- The content -->
        <div class="accordion__content">...</div>
    </div>

    <!-- Expanded item -->
    <div class="accordion__item accordion__item--expanded">...</div>

    <!-- Repeat other item -->
    ...
</div>
```

## CSS

```css styles.css
.accordion {
    /* Border */
    border: 1px solid #d1d5db;
    border-bottom-color: transparent;
    border-radius: 4px;
}

.accordion__item {
    border-bottom: 1px solid #d1d5db;
}

.accordion__header {
    /* Center the content horizontally */
    align-items: center;
    display: flex;

    cursor: pointer;
    padding: 16px;
}

.accordion__toggle {
    margin-right: 12px;
}

.accordion__title {
    /* Take remaining width */
    flex: 1;
}

.accordion__content {
    border-top: 1px solid #d1d5db;
    padding: 16px;
}

.accordion__item--collapsed .accordion__content {
    display: none;
}
.accordion__item--expanded .accordion__content {
    display: block;
}
```

<Playground>
```css placeholders.css hidden
.lines {
    padding: 0.25rem 0;
    width: 100%;
    align-items: center;
    display: flex;
    justify-content: center;
    flex-direction: column;
}
.line {
    background: #d1d5db;
    height: 1px;
    margin-bottom: 0.25rem;
}
.line.line--20 {
    width: 20%;
}
.line.line--40 {
    width: 40%;
}
.line.line--60 {
    width: 60%;
}
.line.line--80 {
    width: 80%;
}
.line.line--100 {
    width: 100%;
}
.rectangle {
    background: #d1d5db;
    border-radius: 0.25rem;
    height: var(--rectangle-height);
    width: var(--rectangle-width);
}
.rectangle--hor.rectangle--20 {
    --rectangle-width: 20%;
}
.rectangle--hor.rectangle--40 {
    --rectangle-width: 40%;
}
.rectangle--hor.rectangle--60 {
    --rectangle-width: 60%;
}
.rectangle--hor.rectangle--80 {
    --rectangle-width: 80%;
}
.rectangle--hor.rectangle--100 {
    --rectangle-width: 100%;
}
.rectangle--hor.rectangle--sm {
    --rectangle-height: 0.5rem;
}
.rectangle--hor.rectangle--md {
    --rectangle-height: 2rem;
}
.rectangle--hor.rectangle--lg {
    --rectangle-height: 4rem;
}
.rectangle--ver.rectangle--20 {
    --rectangle-height: 20%;
}
.rectangle--ver.rectangle--40 {
    --rectangle-height: 40%;
}
.rectangle--ver.rectangle--60 {
    --rectangle-height: 60%;
}
.rectangle--ver.rectangle--80 {
    --rectangle-height: 80%;
}
.rectangle--ver.rectangle--100 {
    --rectangle-height: 100%;
}
.rectangle--ver.rectangle--sm {
    --rectangle-width: 0.5rem;
}
.rectangle--ver.rectangle--md {
    --rectangle-width: 2rem;
}
.rectangle--ver.rectangle--lg {
    --rectangle-width: 4rem;
}
.triangle {
    border-style: solid;
    height: 0;
    width: 0;
}
.triangle--t {
    border-color: transparent transparent #d1d5db transparent;
    border-width: 0 var(--triangle-size) var(--triangle-size) var(--triangle-size);
}
.triangle--r {
    border-color: transparent transparent transparent #d1d5db;
    border-width: var(--triangle-size) 0 var(--triangle-size) 1rem;
}
.triangle--b {
    border-color: #d1d5db transparent transparent transparent;
    border-width: var(--triangle-size) var(--triangle-size) 0 var(--triangle-size);
}
.triangle--l {
    border-color: transparent #d1d5db transparent transparent;
    border-width: var(--triangle-size) 1rem var(--triangle-size) 0;
}
.triangle--tr {
    border-color: transparent #d1d5db transparent transparent;
    border-width: 0 var(--triangle-size) var(--triangle-size) 0;
}
.triangle--br {
    border-color: transparent transparent #d1d5db transparent;
    border-width: 0 0 var(--triangle-size) var(--triangle-size);
}
.triangle--bl {
    border-color: transparent transparent transparent #d1d5db;
    border-width: var(--triangle-size) 0 0 var(--triangle-size);
}
.triangle--tl {
    border-color: #d1d5db transparent transparent transparent;
    border-width: var(--triangle-size) var(--triangle-size) 0 0;
}
.triangle--sm {
    --triangle-size: 0.5rem;
}
.triangle--md {
    --triangle-size: 2rem;
}
.triangle--lg {
    --triangle-size: 4rem;
}
```

```css styles.css hidden
.accordion {
    border: 1px solid #d1d5db;
    border-radius: 4px;
    height: 100%;
    width: 100%;
}
.accordion__item:not(:last-child) {
    border-bottom: 1px solid #d1d5db;
}
.accordion__header {
    align-items: center;
    display: flex;
    justify-content: center;
    cursor: pointer;
    padding: 0.5rem;
}
.accordion__toggle {
    margin-right: 0.25rem;
}
.accordion__title {
    flex: 1;
}
.accordion__content {
    padding: 0.5rem;
}

.accordion__item--collapsed .accordion__content {
    display: none;
}
.accordion__item--expanded .accordion__content {
    display: block;
}
```

```html index.html hidden
<div class="accordion">
    <div class="accordion__item accordion__item--collapsed">
        <div class="accordion__header">
            <div class="accordion__toggle">
                <div class="triangle triangle--r triangle--sm"></div>
            </div>
            <div class="accordion__title">
                <div class="rectangle rectangle--hor rectangle--sm rectangle--100"></div>
            </div>
        </div>
    </div>
    <div class="accordion__item accordion__item--expanded">
        <div class="accordion__header">
            <div class="accordion__toggle">
                <div class="triangle triangle--b triangle--sm"></div>
            </div>
            <div class="accordion__title">
                <div class="rectangle rectangle--hor rectangle--sm rectangle--100"></div>
            </div>
        </div>
        <div class="accordion__content">
            <div class="lines">
                <div class="line line--80"></div>
                <div class="line line--40"></div>
                <div class="line line--100"></div>
                <div class="line line--60"></div>
                <div class="line line--20"></div>
            </div>

            <div class="lines">
                <div class="line line--80"></div>
                <div class="line line--40"></div>
                <div class="line line--100"></div>
                <div class="line line--60"></div>
                <div class="line line--20"></div>
            </div>
        </div>
    </div>
</div>
```
</Playground>