cssCopy to Clipboard box-sizing: border-box; box-sizing: content-box; /* Global values */ box-sizing: inherit; box-sizing: initial; box-sizing: revert; box-sizing: revert-layer; box-sizing: unset; The box-sizing property is specified as a single keyword chosen from the list of values...
The width CSS property sets an element's width. By default, it sets the width of the content area, but if box-sizing is set to border-box, it sets the width of the border area.
box-sizing属性也有三个值 content-box(default): 设置width为500px,border和padding依然会增加盒子的宽度。(padding和border计入width内。) border-box: 设置width为500px,border和padding不会增加盒子的宽度。(padding和border不计入width内。) padding-box: 设置width为500px,padding计入width内,但是border不会计入width。
P 元素的百分值会受其包含块的 padding 所影响。不过,如果包含块的 box-sizing 值设置为 border-box ,就没有这个问题。 Copy body{background: beige; }section{position: absolute;left:30px;top:30px;width:400px;height:160px;padding:30px20px;background: lightgray; }/* 再次强调,是根据包含块的内容...
Web/CSS/box-sizingbox-sizing 属性用来改变默认的 CSS 盒模型 对元素宽高的计算方式。这个属性可以用于模拟 那些非正确支持标准盒模型的浏览器的表现。 Web/CSS/calcCSS函数 calc() 可以用在任何一个需要{{ cssxref }}、 frequency , angle 、 time 、 number 、或 integer 的地方。有了 ... ...
calc() 此 CSS 函数允许在声明 CSS 属性值时执行一些计算。它可以用在如下场合:<length>、<frequency>, <angle>、、<percentage>、<number>、或 <integer>。
The height CSS property specifies the height of the content area of an element. The content area is inside the padding, border, and margin of the element.
The content CSS property replaces content with a generated value. It can be used to define what is rendered inside an element or pseudo-element. For elements, the content property specifies whether the element renders normally (normal or none) or is repl
The position CSS property sets how an element is positioned in a document. The top, right, bottom, and left physical properties and the inset-block-start, inset-block-end, inset-inline-start, and inset-inline-end flow-relative logical properties can be u
The flex-basis CSS property sets the initial main size of a flex item. It sets the size of the content box unless otherwise set with box-sizing . flex-basis 优先级比 width 或 height 高。order越小，对应的项目越靠前。如果主轴是row, 同一行元素们在主轴方向上的对...