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CSS Border Width


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;
}

Result:

5px border-width
medium border-width
2px border-width
thick border-width

Try it Yourself »


Specific Side Widths
The border-width
property can have from one to four values (for the top border, right border,
bottom border, and the left border):

Example

p.one {  border-style: solid;  border-width: 5px 20px; /*
5px top and bottom, 20px on the sides */}p.two {  border-style:
solid;  border-width: 20px 5px; /* 20px top and bottom, 5px on the
sides */}
p.three {  border-style: solid;  border-width: 25px 10px
4px 35px; /* 25px top, 10px right, 4px bottom and 35px left */}
Try it Yourself »













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Reference: https://www.w3schools.com/css/css_border_width.asp