CSS Verwysing

CSS Verwysing CSS-blaaierondersteuning CSS-keurders CSS-funksies CSS Verwysing Gehoor CSS Web veilige lettertipes CSS-terugvalfonts CSS Animateerbaar CSS-eenhede CSS PX-EM-omskakelaar CSS kleure CSS-kleurwaardes CSS verstekwaardes CSS-entiteite

CSS Properties

align-content align-items align-self all animation animation-delay animation-direction animation-duration animation-fill-mode animation-iteration-count animation-name animation-play-state animation-timing-function backface-visibility background background-attachment background-blend-mode background-clip background-color background-image background-origin background-position background-repeat background-size border border-bottom border-bottom-color border-bottom-left-radius border-bottom-right-radius border-bottom-style border-bottom-width border-collapse border-color border-image border-image-outset border-image-repeat border-image-slice border-image-source border-image-width border-left border-left-color border-left-style border-left-width border-radius border-right border-right-color border-right-style border-right-width border-spacing border-style border-top border-top-color border-top-left-radius border-top-right-radius border-top-style border-top-width border-width bottom box-decoration-break box-shadow box-sizing break-after break-before break-inside caption-side caret-color @charset clear clip clip-path color column-count column-fill column-gap column-rule column-rule-color column-rule-style column-rule-width column-span column-width columns content counter-increment counter-reset cursor direction display empty-cells filter flex flex-basis flex-direction flex-flow flex-grow flex-shrink flex-wrap float font @font-face font-family font-feature-settings font-kerning font-size font-size-adjust font-stretch font-style font-variant font-variant-caps font-weight gap grid grid-area grid-auto-columns grid-auto-flow grid-auto-rows grid-column grid-column-end grid-column-gap grid-column-start grid-gap grid-row grid-row-end grid-row-gap grid-row-start grid-template grid-template-areas grid-template-columns grid-template-rows hanging-punctuation height hyphens image-rendering @import isolation justify-content @keyframes left letter-spacing line-height list-style list-style-image list-style-position list-style-type margin margin-bottom margin-left margin-right margin-top mask-image mask-mode mask-origin mask-position mask-repeat mask-size max-height max-width @media min-height min-width mix-blend-mode object-fit object-position opacity order orphans outline outline-color outline-offset outline-style outline-width overflow overflow-wrap overflow-x overflow-y padding padding-bottom padding-left padding-right padding-top page-break-after page-break-before page-break-inside perspective perspective-origin pointer-events position quotes resize right row-gap scroll-behavior tab-size table-layout text-align text-align-last text-decoration text-decoration-color text-decoration-line text-decoration-style text-indent text-justify text-overflow text-shadow text-transform top transform transform-origin transform-style transition transition-delay transition-duration transition-property transition-timing-function unicode-bidi user-select vertical-align visibility white-space widows width word-break word-spacing word-wrap writing-mode z-index



CSS agtergrond-grootte eiendom


Voorbeeld

Spesifiseer die grootte van 'n agtergrondprent met "outo" en in pixels:

#example1 {
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: auto;
}

#example2 {
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: 300px 100px;
}

Meer "Probeer dit self" voorbeelde hieronder.


Definisie en gebruik

Die background-sizeeiendom spesifiseer die grootte van die agtergrond beelde.

Daar is vier verskillende sintakse wat jy met hierdie eienskap kan gebruik: die sleutelwoordsintaksis ("outo", "omslag" en "bevat"), die eenwaarde-sintaksis (stel die breedte van die prent (hoogte word "outo"), die tweewaarde-sintaksis (eerste waarde: breedte van die beeld, tweede waarde: hoogte), en die veelvuldige agtergrondsintaksis (geskei met komma).

Standaard waarde: outo
Geërf: geen
Animateerbaar: ja. Lees oor animeerbaar
Weergawe: CSS3
JavaScript-sintaksis: voorwerp .style.backgroundSize="60px 120px"

Blaaierondersteuning

Die nommers in die tabel spesifiseer die eerste blaaierweergawe wat die eiendom ten volle ondersteun.

Nommers gevolg deur -webkit-, -moz-, of -o- spesifiseer die eerste weergawe wat met 'n voorvoegsel gewerk het.

Property
background-size  4.0
1.0 -webkit-
9.0 4.0
3.6 -moz-
4.1
3.0 -webkit-
10.5
10.0 -o-


CSS-sintaksis

background-size: auto|length|cover|contain|initial|inherit;

Eiendomswaardes

Value Description Play it
auto Default value. The background image is displayed in its original size
length Sets the width and height of the background image. The first value sets the width, the second value sets the height. If only one value is given, the second is set to "auto". Read about length units
percentage Sets the width and height of the background image in percent of the parent element. The first value sets the width, the second value sets the height. If only one value is given, the second is set to "auto"
cover Resize the background image to cover the entire container, even if it has to stretch the image or cut a little bit off one of the edges
contain Resize the background image to make sure the image is fully visible
initial Sets this property to its default value. Read about initial
inherit Inherits this property from its parent element. Read about inherit

Meer voorbeelde

Voorbeeld

Spesifiseer die grootte van 'n agtergrondprent met persentasie:

#example1 {
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

#example2 {
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: 75% 50%;
}

Voorbeeld

Spesifiseer die grootte van 'n agtergrondprent met "omslag":

#example1 {
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: cover;
}

Voorbeeld

Spesifiseer die grootte van 'n agtergrondprent met "contain":

#example1 {
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: contain;
}

Voorbeeld

Hier het ons twee agtergrondprente. Ons spesifiseer die grootte van die eerste agtergrondprent met "contain", en die tweede agtergrondprent met "cover":

#example1 {
  background: url(img_tree.gif), url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: contain, cover;
}

Voorbeeld

Gebruik verskillende agtergrondeienskappe om 'n "held"-beeld te skep:

.hero-image {
  background-image: url("photographer.jpg"); /* The image used */
  background-color: #cccccc; /* Used if the image is unavailable */
  height: 500px; /* You must set a specified height */
  background-position: center; /* Center the image */
  background-repeat: no-repeat; /* Do not repeat the image */
  background-size: cover; /* Resize the background image to cover the entire container */
}

Verwante bladsye

CSS-tutoriaal: CSS-agtergronde

HTML DOM verwysing: backgroundSize eiendom