Quick Reference
The border-left-width property sets the width of an element’s left border. An element must have a border before you can change the width.
div {
border-left-width: 4px;
}Default
| Default value | none |
| Inherited values | no |
| Can it be animated? | no |
These are the allowed values.
| Value | Description |
|---|---|
| medium | Specifies a medium border (default) |
| thin | Specifies a thin border |
| thick | Specifies a thick border |
| length | Allows you to define the thickness of the border in pixels |
| initial | Sets this property to its default value |
| inherit | Inherits this property from its parent element |
Using JavaScript
The HTML element can also be styled using JavaScript and the element’s id.
document.getElementById('my_div').style.borderLeftWidth = 'thin';<button onclick='my_function()'>Click Here</button>
<script>
function my_function() {
document.getElementById('my_div').style.borderLeftWidth = 'thin';
}
</script>CSS Notes:
- The “inherit”, “initial” and “unset” keywords can be used with any CSS property to set its value
- In CSS there are many ways to express a color value in a property
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.