The **`border-left-width` property** in CSS is used to set the width of the element's left border. 

> In order to use the `border-left-width` we must first declare the **border-style** or **border-left-style** property. 


#   
#  Syntax
```css
border-left-width: medium|thin|thick|length|initial|inherit;
```

#  
## Property Values

- **`medium`**: It is the default value. It is used to specify that the left border is medium.
- **`thin`**: Specifies that the left border is thin.
- **`thick`**: Specifies that the left border is thick.

- **`length`**: Defines the left border’s thickness.
- **`initial`**: Sets the value to it’s default value.
- **`inherit`**: Inherits property from its parent value.


##
## Code

<!DOCTYPE html>
<html>
<head>
    <title>Example</title>
    <style>
        pre 
        {
            border-left-width: 15px;
            border-left-style: solid;
            border-left-color: blue;
        }
    </style>
</head>
 
<body style="text-align:center">
 
    <heading>
        <pre>
            Welcome 
            To 
            Educative 
            Edpresso 
            Shots
        </pre>
    </heading>
  
</body>
 
</html>  

codemirror

In the code above, the left border of the `<pre>` tag is specified to be blue and solid using the `border-left-color` and `border-left-style` properties. The width is set to `15px` using the `border-left-width` property. 

What is the CSS border-left-width property?

Sets the width of an element’s left border, using values like medium, thin, thick, length, initial, or inherit.