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Use CSS border attributes to draw triangles. cssborder

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Use CSS border attributes to draw triangles. cssborder

Effect



HTML:

<! Doctype html>
<Html lang = "en">
<Head>
<Meta charset = "UTF-8">
<Title> CSS Triangle Demo </title>
<Link rel = "stylesheet" href = "triangle.css">
</Head>


<Body>
<H3> Down Triangle <Div class = "down-triangle">
</Div>

<H3> Up Triangle <Div class = "up-triangle">
</Div>

<H3> Left Triangle <Div class = "left-triangle">
</Div>

<H3> Right Triangle <Div class = "right-triangle">
</Div>
</Body>
</Html>



CSS :( triangle.css)

. Down-triangle {
Width: 0;
Height: 0;
Border-width: 10px 10px 0 10px;
Border-style: solid;
Border-color: # dc291e transparent;
}

. Up-triangle {
Width: 0;
Height: 0;
Border-width: 0px 10px 10px 10px;
Border-style: solid;
Border-color: # dc291e transparent;
}

. Left-triangle {
Width: 0;
Height: 0;
Border-width: 10px 10px 10px 0px;
Border-style: solid;
Border-color: transparent # dc291e;
}

. Right-triangle {
Width: 0;
Height: 0;
Border-width: 10px 0px 10px 10px;
Border-style: solid;
Border-color: transparent # dc291e;
}


Github link: https://github.com/kiwiwin/css-demotriangle-demo


Border attributes in css

Border: 1px solid #000; you can set the style width and color of the top right bottom left border at the same time.
Border-style: solid; set the style of the upper right bottom left border
Border-width: 1px 2px 3px 4px; set the width of the upper right bottom left border
Border-color: #000; set the color of the upper right bottom left border
Border-top: 1px solid #000; set the style width and color of the upper border
Border-right: 1px solid #000; set the style width and color of the right border
Border-bottom: 1px solid #000; set the style width and color of the bottom border
Border-left: 1px solid #000; set the style width and color of the left border

Of course, you can expand a few more

Q: How does css implement a downward triangle border (border )? If you do not understand, see the following example.

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "www.w3.org/..al.dtd">
<Html xmlns = "www.w3.org/5o/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Title> Triangle using the border attribute of css </title>
<Style type = "text/css">
<! --
. Box {width: 300px; height: 300px; background: # CCC; position: relative; top: 100px; left: 100px}
. To-top {display: block; overflow: hidden; width: 0px; height: 0px; border: 6px solid # ccc; border-color: # ccc # fff; border-width: 0 6px 6px; position: absolute; left: 30px; top: 0; margin-top:-6px ;}
. To-right {display: block; overflow: hidden; width: 0px; height: 0px; border: 6px solid # ccc; border-color: # fff # ccc; border-width: 6px 0 6px 6px; position: absolute; right: 0px; top: 30px; margin-right:-6px ;}
. To-bottom {display: block; overflow: hidden; width: 0px; height: 0px; border: 6px solid # ccc; border-color: # ccc # fff; border-width: 6px 6px 0 6px; position: absolute; right: 30px; bottom: 0; margin-bottom:-6px ;}
. To-left {display: block; overflow: hidden; width: 0px; height: 0px; border: 6px solid # ccc; border-color: # fff # ccc; border-width: 6px 6px 6px 0; position: absolute; left: 0; bottom: 30px; mar ...... remaining full text>

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Related Keywords:
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