Css codes border styles

border-style

The border-style shorthand CSS property sets the line style for all four sides of an element’s border.

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Constituent properties

This property is a shorthand for the following CSS properties:

Syntax

/* Keyword values */ border-style: none; border-style: hidden; border-style: dotted; border-style: dashed; border-style: solid; border-style: double; border-style: groove; border-style: ridge; border-style: inset; border-style: outset; /* top and bottom | left and right */ border-style: dotted solid; /* top | left and right | bottom */ border-style: hidden double dashed; /* top | right | bottom | left */ border-style: none solid dotted dashed; /* Global values */ border-style: inherit; border-style: initial; border-style: revert; border-style: revert-layer; border-style: unset; 

The border-style property may be specified using one, two, three, or four values.

• When one value is specified, it applies the same style to all four sides.
• When two values are specified, the first style applies to the top and bottom, the second to the left and right.
• When three values are specified, the first style applies to the top, the second to the left and right, the third to the bottom.
• When four values are specified, the styles apply to the top, right, bottom, and left in that order (clockwise).

Each value is a keyword chosen from the list below.

Values

Describes the style of the border. It can have the following values:

Like the hidden keyword, displays no border. Unless a background-image is set, the computed value of the same side’s border-width will be 0 , even if the specified value is something else. In the case of table cell and border collapsing, the none value has the lowest priority: if any other conflicting border is set, it will be displayed.

Like the none keyword, displays no border. Unless a background-image is set, the computed value of the same side’s border-width will be 0 , even if the specified value is something else. In the case of table cell and border collapsing, the hidden value has the highest priority: if any other conflicting border is set, it won’t be displayed.

Displays a series of rounded dots. The spacing of the dots is not defined by the specification and is implementation-specific. The radius of the dots is half the computed value of the same side’s border-width .

Displays a series of short square-ended dashes or line segments. The exact size and length of the segments are not defined by the specification and are implementation-specific.

Displays a single, straight, solid line.

Displays two straight lines that add up to the pixel size defined by border-width .

Displays a border with a carved appearance. It is the opposite of ridge .

Displays a border with an extruded appearance. It is the opposite of groove .

Displays a border that makes the element appear embedded. It is the opposite of outset . When applied to a table cell with border-collapse set to collapsed , this value behaves like ridge .

Displays a border that makes the element appear embossed. It is the opposite of inset . When applied to a table cell with border-collapse set to collapsed , this value behaves like groove .

Formal definition

• border-top-style : none
• border-right-style : none
• border-bottom-style : none
• border-left-style : none

• border-bottom-style : as specified
• border-left-style : as specified
• border-right-style : as specified
• border-top-style : as specified

Formal syntax

border-style =

=
none |
hidden |
dotted |
dashed |
solid |
double |
groove |
ridge |
inset |
outset

Examples

All property values

Here is an example of all the property values.

HTML

pre class="b1">nonepre> pre class="b2">hiddenpre> pre class="b3">dottedpre> pre class="b4">dashedpre> pre class="b5">solidpre> pre class="b6">doublepre> pre class="b7">groovepre> pre class="b8">ridgepre> pre class="b9">insetpre> pre class="b10">outsetpre> 

CSS

pre  height: 80px; width: 120px; margin: 20px; padding: 20px; display: inline-block; background-color: palegreen; border-width: 5px; box-sizing: border-box; > /* border-style example classes */ .b1  border-style: none; > .b2  border-style: hidden; > .b3  border-style: dotted; > .b4  border-style: dashed; > .b5  border-style: solid; > .b6  border-style: double; > .b7  border-style: groove; > .b8  border-style: ridge; > .b9  border-style: inset; > .b10  border-style: outset; > 

Result

Specifications

Browser compatibility

BCD tables only load in the browser

See also

Found a content problem with this page?

This page was last modified on Jun 30, 2023 by MDN contributors.

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border

The border shorthand CSS property sets an element’s border. It sets the values of border-width , border-style , and border-color .

Try it

Constituent properties

This property is a shorthand for the following CSS properties:

Syntax

/* style */ border: solid; /* width | style */ border: 2px dotted; /* style | color */ border: outset #f33; /* width | style | color */ border: medium dashed green; /* Global values */ border: inherit; border: initial; border: revert; border: revert-layer; border: unset; 

The border property may be specified using one, two, or three of the values listed below. The order of the values does not matter.

Note: The border will be invisible if its style is not defined. This is because the style defaults to none .

Values

Sets the thickness of the border. Defaults to medium if absent. See border-width .

Sets the style of the border. Defaults to none if absent. See border-style .

Sets the color of the border. Defaults to currentcolor if absent. See border-color .

Description

As with all shorthand properties, any omitted sub-values will be set to their initial value. Importantly, border cannot be used to specify a custom value for border-image , but instead sets it to its initial value, i.e., none .

The border shorthand is especially useful when you want all four borders to be the same. To make them different from each other, however, you can use the longhand border-width , border-style , and border-color properties, which accept different values for each side. Alternatively, you can target one border at a time with the physical (e.g., border-top ) and logical (e.g., border-block-start ) border properties.

Borders vs. outlines

Borders and outlines are very similar. However, outlines differ from borders in the following ways:

• Outlines never take up space, as they are drawn outside of an element’s content.
• According to the spec, outlines don’t have to be rectangular, although they usually are.

Formal definition

• border-width : as each of the properties of the shorthand:
  • border-top-width : medium
  • border-right-width : medium
  • border-bottom-width : medium
  • border-left-width : medium
  • border-top-style : none
  • border-right-style : none
  • border-bottom-style : none
  • border-left-style : none
  • border-top-color : currentcolor
  • border-right-color : currentcolor
  • border-bottom-color : currentcolor
  • border-left-color : currentcolor
  • border-width : as each of the properties of the shorthand:
    • border-bottom-width : the absolute length or 0 if border-bottom-style is none or hidden
    • border-left-width : the absolute length or 0 if border-left-style is none or hidden
    • border-right-width : the absolute length or 0 if border-right-style is none or hidden
    • border-top-width : the absolute length or 0 if border-top-style is none or hidden
    • border-bottom-style : as specified
    • border-left-style : as specified
    • border-right-style : as specified
    • border-top-style : as specified
    • border-bottom-color : computed color
    • border-left-color : computed color
    • border-right-color : computed color
    • border-top-color : computed color
    • border-color : as each of the properties of the shorthand:
      • border-bottom-color : a color
      • border-left-color : a color
      • border-right-color : a color
      • border-top-color : a color
      • border-bottom-width : a length
      • border-left-width : a length
      • border-right-width : a length
      • border-top-width : a length

      Formal syntax

      border =
      ||
      ||

      =
      |
      thin |
      medium |
      thick

      =
      none |
      hidden |
      dotted |
      dashed |
      solid |
      double |
      groove |
      ridge |
      inset |
      outset

      Examples

      Setting a pink outset border

      HTML

      div>I have a border, an outline, and a box shadow! Amazing, isn't it?div> 

      CSS

      div  border: 0.5rem outset pink; outline: 0.5rem solid khaki; box-shadow: 0 0 0 2rem skyblue; border-radius: 12px; font: bold 1rem sans-serif; margin: 2rem; padding: 1rem; outline-offset: 0.5rem; > 

      Result

      Specifications

      Browser compatibility

      BCD tables only load in the browser

      See also

      Found a content problem with this page?

      This page was last modified on Jul 18, 2023 by MDN contributors.

      Your blueprint for a better internet.

      MDN

      Support

      Our communities

      Developers

      Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
      Portions of this content are ©1998– 2023 by individual mozilla.org contributors. Content available under a Creative Commons license.

      Источник

      Все о свойстве border

      

      Все знакомы с css параметром border, но есть ли вещи, которые мы не знаем о нем?

      Основы

      border-width: thick; border-style: solid; border-color: black;

      

      Например у параметра border-width есть три параметра: thin, medium, thick:

      Если необходимо менять цвет границы при наведении на объект:

      Border-Radius

      

      border-radius — это новый параметр CSS3 для отображения закругленных углов, который корректно работает во всех современных браузерах, за исключением Internet Explorer 8 (и более старых версий).

      Для каждого угла можно назначить свое закругление:

      border-top-left-radius: 20px; border-top-right-radius: 0; border-bottom-right-radius: 30px; border-bottom-left-radius: 0;

      

      В приведенном примере необязательно назначать «0» border-top-right-radius и border-bottom-left-radius, если они не наследуют значения, которые должны быть изменены.
      Всю конструкцию можно сжать в одну строку:

      /* top left, top right, bottom right, bottom left */ border-radius: 20px 0 30px 0;

      

      Здесь описаны самые простые и популярные примеры применения параметра border. Перейдем к более сложным.

      Несколько границ

      Border-Style

      solid, dashed, and dotted — самые популярные значения параметра border-style, но давайте рассмотрим другие, например, groove and ridge.

      border: 20px groove #e3e3e3;

      border-color: #e3e3e3; border-width: 20px; border-style: groove;

      

      Outline

      

      Этот способ отлично работает, но ограничен созданием двойной рамки. Если вам необходимо отобразить несколько границ элемента, то необходимо использовать другую технику.

      Псевдоэлементы

      .box < width: 200px; height: 200px; background: #e3e3e3; position: relative; border: 10px solid green; >/* Create two boxes with the same width of the container */ .box:after, .box:before < content: ''; position: absolute; top: 0; left: 0; bottom: 0; right: 0; >.box:after < border: 5px solid red; outline: 5px solid yellow; >.box:before

      

      Возможно это не самое элегантное решение, однако оно работает

      Box-Shadow

      

      Изменение углов

      border-radius: 50px / 100px; /* horizontal radius, vertical radius */

      border-top-left-radius: 50px 100px; border-top-right-radius: 50px 100px; border-bottom-right-radius: 50px 100px; border-bottom-left-radius: 50px 100px;

      Эта техничка бывает полезна, если необходимо имитировать искривление, а не закругление. Например, так можно получить эффект скрученной бумаги:

      

      CSS фигуры

      Наиболее частым примером использования CSS фигур является отображение стрелок. Чтобы понять, как это работает, необходимо разобраться с использованием отдельного border-color для каждой стороны и установкой значения «0» для width и height:

      

      А теперь оставляем только синий треугольник:

      

      Создание Speech Bubble

      

      Теперь нужно расположить стрелку-треугольник в нужном месте. Вот наш цветной квадратик:

      

      Оставляем только четверть квадратика:

      

      Теперь перемещаем ниже и закрашиваем:

      .speech-bubble < /* … other styles */ border-radius: 10px; >.speech-bubble:after < content: ''; position: absolute; width: 0; height: 0; border: 15px solid; border-top-color: #292929; top: 100%; left: 50%; margin-left: -15px; /* adjust for border width */ >

      

      Примеры применения:

      /* Speech Bubbles Usage: Apply a class of .speech-bubble and .speech-bubble-DIRECTION 
      Hi there
       */ .speech-bubble < position: relative; background-color: #292929; width: 200px; height: 150px; line-height: 150px; /* vertically center */ color: white; text-align: center; border-radius: 10px; font-family: sans-serif; >.speech-bubble:after < content: ''; position: absolute; width: 0; height: 0; border: 15px solid; >/* Position the Arrow */ .speech-bubble-top:after < border-bottom-color: #292929; left: 50%; bottom: 100%; margin-left: -15px; >.speech-bubble-right:after < border-left-color: #292929; left: 100%; top: 50%; margin-top: -15px; >.speech-bubble-bottom:after < border-top-color: #292929; top: 100%; left: 50%; margin-left: -15px; >.speech-bubble-left:after

      

      Вертикальное центрирование текста

      минус использования line-height при вертикальном центрировании в ограничении текста одной строкой. Для решения этой проблемы, можно применить display: table к нашему Speech Bubble и display: table-cell к тексту:

      .speech-bubble < /* other styles */ display: table; >.speech-bubble p

      

      Еще один пример нестандартного использования границ:

      

      Итог

      Использование параметра border не ограничивается одним лишь «1px solid black», с помощью границ можно создавать различные фигуры, причем достаточно один раз написать CSS-класс и применять его к множеству элементов на странице.

      Источник