---
category: Input
created: '2019-11-16'
description: Create an input add-on with CSS flexbox
keywords: css flexbox, css input add-on
thumbnail: /assets/css-layout/thumbnails/input-addon.png
title: Input addon
---

## HTML

```html index.html
<!-- Add-on prepended -->
<div class="input-addon">
    <!-- Add-on -->
    <div class="input-addon__addon input-addon__addon--prepended">...</div>

    <!-- Input -->
    <input type="text" class="input-addon__input" />
</div>

<!-- Add-on appended -->
<div class="input-addon">
    <!-- Input -->
    <input type="text" class="input-addon__input" />

    <!-- Add-on -->
    <div class="input-addon__addon input-addon__addon--appended">...</div>
</div>

<!-- Appended and prepended add-ons -->
<div class="input-addon">
    <!-- Add-on -->
    <div class="input-addon__addon input-addon__addon--prepended">...</div>

    <!-- Input -->
    <input type="text" class="input-addon__input" />

    <!-- Add-on -->
    <div class="input-addon__addon input-addon__addon--appended">...</div>
</div>
```

## CSS

```css styles.css
.input-addon {
    border: 1px solid #d1d5db;
    border-radius: 0.25rem;
    display: flex;
}

.input-addon__input {
    border: none;

    /* Take the remaining width */
    flex: 1;
}

.input-addon__addon {
    /* Center the content */
    align-items: center;
    display: flex;
    justify-content: center;
}

.input-addon__addon--prepended {
    border-right: 1px solid #d1d5db;
}
.input-addon__addon--appended {
    border-left: 1px solid #d1d5db;
}
```

<Playground>
```css placeholders.css hidden
.circle {
    background: #d1d5db;
    border-radius: 9999px;
    height: var(--circle-size);
    width: var(--circle-size);
}
.circle--sm {
    --circle-size: 0.5rem;
}
.circle--md {
    --circle-size: 1.5rem;
}
.circle--lg {
    --circle-size: 4rem;
}
```

```css styles.css hidden
body {
    align-items: center;
    display: flex;
    justify-content: center;
}

.input-addon {
    border: 1px solid #d1d5db;
    border-radius: 0.25rem;
    display: flex;

    /* Demo */
    margin-bottom: 0.5rem;
    width: 16rem;
}

.input-addon__input {
    border: none;
    /* Take the remaining width */
    flex: 1;

    /* Demo */
    padding: 0.25rem;
    margin: 0 0.25rem;
    width: 5rem;
}

.input-addon__addon {
    /* Center the content */
    align-items: center;
    display: flex;
    justify-content: center;

    /* Demo */
    padding: 0.25rem;
}

.input-addon__addon--prepended {
    border-right: 1px solid #d1d5db;
}
.input-addon__addon--appended {
    border-left: 1px solid #d1d5db;
}
```

```html index.html hidden
<div class="input-addon">
    <div class="input-addon__addon input-addon__addon--prepended"><div class="circle circle--md"></div></div>
    <input type="text" class="input-addon__input" />
</div>

<div class="input-addon">
    <input type="text" class="input-addon__input" />
    <div class="input-addon__addon input-addon__addon--appended"><div class="circle circle--md"></div></div>
</div>
```
</Playground>