CSS border-inline-style Property

What You’ll Learn

The border-inline-style property sets the line style on both inline sides — inline-start and inline-end.

Definition and Usage

The border-inline-style CSS property controls how the border line is drawn on both inline edges of an element — inline-start and inline-end. It is a longhand of border-inline and accepts the same style keywords as standard border properties.

Unlike border-style, which sets styles on all four sides at once, border-inline-style only affects the two inline edges and adapts to writing mode and text direction — useful for RTL layouts and multilingual interfaces.

📝 Syntax

border-inline-style accepts standard border style keywords:

selector {
  border-inline-style: style;
}

Basic Example

div {
  border-inline-style: solid;
  border-inline-width: 4px;
  border-inline-color: blue;
}

Syntax Rules

• Accepts none, solid, dashed, dotted, double, and 3D styles.
• Only affects the two inline border edges; block sides keep their own styles.
• You need a width greater than zero for the style to be visible.
• In horizontal writing modes, inline edges are usually the left and right sides.
• Default is none, which draws no border on the inline edges.

Default Value

The default value of border-inline-style is none. No inline border is drawn until you set a visible style such as solid or dashed.

💎 Property Values

Common Style Types

Inline Style and Writing Modes

border-inline-style applies the same style to both inline-start and inline-end. In horizontal writing modes, that usually means the left and right sides — regardless of text direction.

border-inline-style vs related properties

Examples Gallery

Try border-inline-style with solid, mixed styles, dotted, and RTL layouts.

<style>
  div {
    border-inline-style: solid;
    border-inline-width: 4px;
    border-inline-color: blue;
    padding: 0.75rem 1rem;
  }
</style>

<div>This div has a solid blue border on the inline edges.</div>

.card {
  border: 2px solid #cbd5e1;
  border-inline-style: dashed;
  border-inline-color: #2563eb;
  padding: 1rem;
  background: #eff6ff;
}

.note {
  border-inline: 3px dotted #7c3aed;
  padding: 0.75rem 1rem;
  background: #faf5ff;
}

<style>
  .rtl-box {
    direction: rtl;
    border-inline-style: dashed;
    border-inline-width: 3px;
    border-inline-color: #059669;
    padding: 0.75rem 1rem;
    background: #ecfdf5;
  }
</style>

<div class="rtl-box">
  سدود منقطة على جانبي النر
</div>

💡 Best Practices