Quick Reference
The border-top property is a shorthand property for all the other properties a CSS top border can be given.
div {
border-top: #ff0000 solid 4px;
}Default
| Default value | (text color) none medium |
| Inherited values | no |
| Can it be animated? | yes |
These are the allowed values.
| Value | Description |
|---|---|
| border-top-width | Specifies the width of the top border (default value is "medium") |
| border-top-style | Specifies the style of the top border (default value is "none") (required) |
| border-top-color | Specifies the color of the top border (default value is the color of the text) |
| 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.borderTop = 'red solid thin';<button onclick='my_function()'>Click Here</button>
<script>
function my_function() {
document.getElementById('my_div').style.borderTop = 'red solid 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.