/*! normalize.css v8.0.0 | MIT License | github.com/necolas/normalize.css */ /* Document ========================================================================== */ /** * 1. ��������������е��и�. * 2. ��iOS���л�������ʱ����ֹ�����С�ĵ���. */ html { line-height: 1.15; /* 1 */ -webkit-text-size-adjust: 100%; /* 2 */ } /* Sections ========================================================================== */ /** * ɾ�������������marginֵ�� */ body { margin: 0; } /** * Correct the font size and margin on `h1` elements within `section` and * `article` contexts in Chrome, Firefox, and Safari. * ����h1Ԫ�ص�font-size��marginֵ */ 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.��������������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. ������������о��������С�ļ̳к���չ�� * 2. Correct the odd `em` font sizing in all browsers. * 2. ������������о��������������С�� */ pre { font-family: monospace, monospace; /* 1 */ font-size: 1em; /* 2 */ } /* Text-level semantics���ı���������� ========================================================================== */ /** * Remove the gray background on active links in IE 10. * ɾ��IE 10�л�Ծ���ӵĻ�ɫ������ */ a { background-color: transparent; } /** * 1. Remove the bottom border in Chrome 57- * 1. �Ƴ�Chrome 57-�������border-bottom * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari. * 2. ��Chrome��Edge��IE��Opera��Safari��������ȷ��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. * ��Chrome��Edge��Safari��������ȷ��font-weight */ b, strong { font-weight: bolder; } /** * 1. Correct the inheritance and scaling of font size in all browsers. * 1.������������о��������С�ļ̳к���չ�� * 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. * ��ֹ��sub���͡�sup��Ԫ��Ӱ��������������߸߶ȡ� */ sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; } sub { bottom: -0.25em; } sup { top: -0.5em; } /* Embedded content��Ƕ������ ========================================================================== */ /** * 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. * ��Edge��Firefox��IE��ɾ���ı�ת���ļ̳С� * 1. Remove the inheritance of text transform in Firefox. * 1. ɾ��Firefox���ı�ת���ļ̳С� */ button, select { /* 1 */ text-transform: none; } /** * Correct the inability to style clickable types in iOS and Safari. * ������iOS��Safari���޷�ʹ�ÿɵ�����͵Ĺ��ܡ� */ button, [type="button"], [type="reset"], [type="submit"] { -webkit-appearance: button; } /** * Remove the inner border and padding in Firefox. * �Ƴ�Firefox��border��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. * �ָ���ǰ����δ���õĽ�����ʽ�� */ button:-moz-focusring, [type="button"]:-moz-focusring, [type="reset"]:-moz-focusring, [type="submit"]:-moz-focusring { outline: 1px dotted ButtonText; } /** * Correct the padding in Firefox. * ���������paddingֵ */ 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. ��IE�ġ�fieldset��Ԫ���о�����ɫ�̳С� * 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. * ��Chrome��Firefox��Opera��������ȷ�Ĵ�ֱ���뷽ʽ�� */ progress { vertical-align: baseline; } /** * Remove the default vertical scrollbar in IE 10+. * ɾ��IE 10+�е�Ĭ�ϴ�ֱ������ */ textarea { overflow: auto; } /** * 1. Add the correct box sizing in IE 10. * 1. ����IE10�е�box-sizing * 2. Remove the padding in IE 10. * 2. �Ƴ�IE10��paddingֵ */ [type="checkbox"], [type="radio"] { box-sizing: border-box; /* 1 */ padding: 0; /* 2 */ } /** * Correct the cursor style of increment and decrement buttons in Chrome. * ����Chrome�����Ӻͼ�����ť�Ĺ����ʽ�� */ [type="number"]::-webkit-inner-spin-button, [type="number"]::-webkit-outer-spin-button { height: auto; } /** * 1. Correct the odd appearance in Chrome and Safari. * 1. ������Chrome��Safari�г��ֵ�������� * 2. Correct the outline style in Safari. * 2. ����Safari�е�outline��ʽ */ [type="search"] { -webkit-appearance: textfield; /* 1 */ outline-offset: -2px; /* 2 */ } /** * Remove the inner padding in Chrome and Safari on macOS. * �Ƴ�chrome��macos�ϵ�Safari��paddingֵ */ [type="search"]::-webkit-search-decoration { -webkit-appearance: none; } /** * 1. Correct the inability to style clickable types in iOS and Safari. * 1. ������iOS��Safari���޷�ʹ�ÿɵ�����͵Ĺ��ܡ� * 2. Change font properties to `inherit` in Safari. * 2. ��Safari�и����������ԣ��ԡ�inherit���� */ ::-webkit-file-upload-button { -webkit-appearance: button; /* 1 */ font: inherit; /* 2 */ } /* Interactive������ʽ�� ========================================================================== */ /* * Add the correct display in Edge, IE 10+, and Firefox. * ����Edge, IE 10+,�� Firefox��details��ǩ��display���� */ details { display: block; } /* * Add the correct display in all browsers. * ���������������display���� */ summary { display: list-item; } /* Misc ========================================================================== */ /** * Add the correct display in IE 10+. * ����IE10+��templateԪ�ص�display */ template { display: none; } /** * Add the correct display in IE 10. * ����IE 10�е�display */ [hidden] { display: none; }