Chapter 7
CSS Border Width
The border-width property specifies the width of the four borders.
The width can be set as a specific size (in px, pt, cm, em, etc) or by using one of the three pre-defined values: thin, medium, or thick:
Example
Demonstration of the different border widths:
p.one {
border-style: solid;
border-width: 5px;
}
p.two {
border-style: solid;
border-width: medium;
}
p.three {
border-style: dotted;
border-width: 2px;
}
p.four {
border-style: dotted;
border-width: thick;
}
Example
<html>
<head>
<style>
p.one {
border-style: solid;
border-width: 5px;
}
p.two {
border-style: solid;
border-width: medium;
}
p.three {
border-style: dotted;
border-width: 2px;
}
p.four {
border-style: dotted;
border-width: thick;
}
p.five {
border-style: double;
border-width: 10px;
}
p.six {
border-style: double;
border-width: thick;
}
</style>
</head>
<body>
<h2>The border-width Property</h2>
<p>This property specifies the width of the four borders:</p>
<p class="one">Some text.</p>
<p class="two">Some text.</p>
<p class="three">Some text.</p>
<p class="four">Some text.</p>
<p class="five">Some text.</p>
<p class="six">Some text.</p>
<p><b>Note:</b> The "border-width" property does not work if it is used alone.
Always specify the "border-style" property to set the borders first.</p>
</body>
</html>
CSS Border Color
The border-color property is used to set the color of the four borders.
The color can be set by:
- name - specify a color name, like "red"
- HEX - specify a HEX value, like "#ff0000"
- RGB - specify a RGB value, like "rgb(255,0,0)"
- HSL - specify a HSL value, like "hsl(0, 100%, 50%)"
- transparent
Note: If border-color is not set, it inherits the color of the element.
Example
Demonstration of the different border colors:
p.one {
border-style: solid;
border-color: red;
}
p.two {
border-style: solid;
border-color: green;
}
p.three {
border-style: dotted;
border-color: blue;
}
Example
<html>
<head>
<style>
p.one {
border-style: solid;
border-color: red;
}
p.two {
border-style: solid;
border-color: green;
}
p.three {
border-style: dotted;
border-color: blue;
}
</style>
</head>
<body>
<h2>The border-color Property</h2>
<p>This property specifies the color of the four borders:</p>
<p class="one">A solid red border</p>
<p class="two">A solid green border</p>
<p class="three">A dotted blue border</p>
<p><b>Note:</b> The "border-color" property does not work if it is used alone. Use the "border-style" property to set the borders first.</p>
</body>
</html>
Example
<html>
<head>
<style>
p.one {
border-style: solid;
border-color: red green blue yellow; /* red top, green right, blue bottom and yellow left */
}
</style>
</head>
<body>
<h2>The border-color Property</h2>
<p>The border-color property can have from one to four values (for the top border, right border, bottom border, and the left border):</p>
<p class="one">A solid multicolor border</p>
</body>
</html>
CSS Border Sides
CSS Border - Individual Sides
From the examples on the previous pages, you have seen that it is possible to specify a different border for each side.
In CSS, there are also properties for specifying each of the borders (top, right, bottom, and left):
Example
p {
border-top-style: dotted;
border-right-style: solid;
border-bottom-style: dotted;
border-left-style: solid;
}
Example
<html>
<head>
<style>
p {
border-top-style: dotted;
border-right-style: solid;
border-bottom-style: dotted;
border-left-style: solid;
}
</style>
</head>
<body>
<h2>Individual Border Sides</h2>
<p>2 different border styles.</p>
</body>
</html>
So, here is how it works:
If the border-style property has four values:
- border-style: dotted solid double dashed;
- top border is dotted
- right border is solid
- bottom border is double
- left border is dashed
If the border-style property has three values:
- border-style: dotted solid double;
- top border is dotted
- right and left borders are solid
- bottom border is double
If the border-style property has two values:
- border-style: dotted solid;
- top and bottom borders are dotted
- right and left borders are solid
If the border-style property has one value:
- border-style: dotted;
- all four borders are dotted
Example
<html>
<head>
<style>
body {
text-align: center;
}
/* Four values */
p.four {
border-style: dotted solid double dashed;
}
/* Three values */
p.three {
border-style: dotted solid double;
}
/* Two values */
p.two {
border-style: dotted solid;
}
/* One value */
p.one {
border-style: dotted;
}
</style>
</head>
<body>
<h2>Individual Border Sides</h2>
<p class="four">4 different border styles.</p>
<p class="three">3 different border styles.</p>
<p class="two">2 different border styles.</p>
<p class="one">1 border style.</p>
</body>
</html>