/*! normalize.css v8.0.0 | MIT License | github.com/necolas/normalize.css */ /* Document ========================================================================== */ /** * 1. 修正所有浏览器中的行高. * 2. 在iOS的切换横竖屏时，防止字体大小的调整. */ html { line-height: 1.15; /* 1 */ -webkit-text-size-adjust: 100%; /* 2 */ } /* Sections ========================================================================== */ /** * 删除所有浏览器的margin值。 */ body { margin: 0; } /** * Correct the font size and margin on `h1` elements within `section` and * `article` contexts in Chrome, Firefox, and Safari. * 修正h1元素的font-size和margin值 */ h1 { font-size: 2em; margin: 0.67em 0; } /* Grouping content ========================================================================== */ /** * 1. Add the correct box sizing in Firefox. * 2. Show the overflow in Edge and IE. * 1.修正火狐浏览器的box-sizing */ hr { box-sizing: content-box; /* 1 */ height: 0; /* 1 */ overflow: visible; /* 2 */ } /** * 1. Correct the inheritance and scaling of font size in all browsers. * 1. 在所有浏览器中纠正字体大小的继承和扩展。 * 2. Correct the odd `em` font sizing in all browsers. * 2. 在所有浏览器中纠正奇数的字体大小。 */ pre { font-family: monospace, monospace; /* 1 */ font-size: 1em; /* 2 */ } /* Text-level semantics：文本级别的语义 ========================================================================== */ /** * Remove the gray background on active links in IE 10. * 删除IE 10中活跃链接的灰色背景。 */ a { background-color: transparent; } /** * 1. Remove the bottom border in Chrome 57- * 1. 移除Chrome 57-浏览器的border-bottom * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari. * 2. 在Chrome、Edge、IE、Opera和Safari中添加正确的text-decoration。 */ abbr[title] { border-bottom: none; /* 1 */ text-decoration: underline; /* 2 */ text-decoration: underline dotted; /* 2 */ } /** * Add the correct font weight in Chrome, Edge, and Safari. * 在Chrome、Edge和Safari中添加正确的font-weight */ b, strong { font-weight: bolder; } /** * 1. Correct the inheritance and scaling of font size in all browsers. * 1.在所有浏览器中纠正字体大小的继承和扩展。 * 2. Correct the odd `em` font sizing in all browsers. */ code, kbd, samp { font-family: monospace, monospace; /* 1 */ font-size: 1em; /* 2 */ } /** * Add the correct font size in all browsers. */ small { font-size: 80%; } /** * Prevent `sub` and `sup` elements from affecting the line height in * all browsers. * 防止“sub”和“sup”元素影响所有浏览器的线高度。 */ sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; } sub { bottom: -0.25em; } sup { top: -0.5em; } /* Embedded content：嵌入命令 ========================================================================== */ /** * Remove the border on images inside links in IE 10. */ img { border-style: none; } /* Forms ========================================================================== */ /** * 1. Change the font styles in all browsers. * 2. Remove the margin in Firefox and Safari. */ button, input, optgroup, select, textarea { font-family: inherit; /* 1 */ font-size: 100%; /* 1 */ line-height: 1.15; /* 1 */ margin: 0; /* 2 */ } /** * Show the overflow in IE. * 1. Show the overflow in Edge. */ button, input { /* 1 */ overflow: visible; } /** * Remove the inheritance of text transform in Edge, Firefox, and IE. * 在Edge、Firefox和IE中删除文本转换的继承。 * 1. Remove the inheritance of text transform in Firefox. * 1. 删除Firefox中文本转换的继承。 */ button, select { /* 1 */ text-transform: none; } /** * Correct the inability to style clickable types in iOS and Safari. * 纠正在iOS和Safari中无法使用可点击类型的功能。 */ button, [type="button"], [type="reset"], [type="submit"] { -webkit-appearance: button; } /** * Remove the inner border and padding in Firefox. * 移除Firefox中border和padding */ button::-moz-focus-inner, [type="button"]::-moz-focus-inner, [type="reset"]::-moz-focus-inner, [type="submit"]::-moz-focus-inner { border-style: none; padding: 0; } /** * Restore the focus styles unset by the previous rule. * 恢复以前规则未设置的焦点样式。 */ button:-moz-focusring, [type="button"]:-moz-focusring, [type="reset"]:-moz-focusring, [type="submit"]:-moz-focusring { outline: 1px dotted ButtonText; } /** * Correct the padding in Firefox. * 修正火狐的padding值 */ fieldset { padding: 0.35em 0.75em 0.625em; } /** * 1. Correct the text wrapping in Edge and IE. * 1. * 2. Correct the color inheritance from `fieldset` elements in IE. * 2. 从IE的“fieldset”元素中纠正颜色继承。 * 3. Remove the padding so developers are not caught out when they zero out * `fieldset` elements in all browsers. * 3. */ legend { box-sizing: border-box; /* 1 */ color: inherit; /* 2 */ display: table; /* 1 */ max-width: 100%; /* 1 */ padding: 0; /* 3 */ white-space: normal; /* 1 */ } /** * Add the correct vertical alignment in Chrome, Firefox, and Opera. * 在Chrome、Firefox和Opera中添加正确的垂直对齐方式。 */ progress { vertical-align: baseline; } /** * Remove the default vertical scrollbar in IE 10+. * 删除IE 10+中的默认垂直滚动条 */ textarea { overflow: auto; } /** * 1. Add the correct box sizing in IE 10. * 1. 修正IE10中的box-sizing * 2. Remove the padding in IE 10. * 2. 移除IE10的padding值 */ [type="checkbox"], [type="radio"] { box-sizing: border-box; /* 1 */ padding: 0; /* 2 */ } /** * Correct the cursor style of increment and decrement buttons in Chrome. * 修正Chrome中增加和减量按钮的光标样式。 */ [type="number"]::-webkit-inner-spin-button, [type="number"]::-webkit-outer-spin-button { height: auto; } /** * 1. Correct the odd appearance in Chrome and Safari. * 1. 修正在Chrome和Safari中出现的奇怪现象。 * 2. Correct the outline style in Safari. * 2. 修正Safari中的outline样式 */ [type="search"] { -webkit-appearance: textfield; /* 1 */ outline-offset: -2px; /* 2 */ } /** * Remove the inner padding in Chrome and Safari on macOS. * 移除chrome和macos上的Safari的padding值 */ [type="search"]::-webkit-search-decoration { -webkit-appearance: none; } /** * 1. Correct the inability to style clickable types in iOS and Safari. * 1. 纠正在iOS和Safari中无法使用可点击类型的功能。 * 2. Change font properties to `inherit` in Safari. * 2. 在Safari中更改字体属性，以“inherit”。 */ ::-webkit-file-upload-button { -webkit-appearance: button; /* 1 */ font: inherit; /* 2 */ } /* Interactive：交互式的 ========================================================================== */ /* * Add the correct display in Edge, IE 10+, and Firefox. * 修正Edge, IE 10+,和 Firefox中details标签的display属性 */ details { display: block; } /* * Add the correct display in all browsers. * 修正所有浏览器的display属性 */ summary { display: list-item; } /* Misc ========================================================================== */ /** * Add the correct display in IE 10+. * 修正IE10+的template元素的display */ template { display: none; } /** * Add the correct display in IE 10. * 修正IE 10中的display */ [hidden] { display: none; }