常用的初始化基础样式border.css和reset.css
解决移动端1px（1像素）问题
border.css
该css样式用于解决移动端1像素边框问题。问题解析：有些手机的屏幕分辨率较高，是2-3倍屏幕。css样式中border:1px solid red;在2倍屏下，显示的并不是1个物理像素，而是2个物理像素。为了解决找个问题，引入border.css是非常有必要的。
@charset "utf-8";
.border,
.border-top,
.border-right,
.border-bottom,
.border-left,
.border-topbottom,
.border-rightleft,
.border-topleft,
.border-rightbottom,
.border-topright,
.border-bottomleft {
position: relative;
}
.border::before,
.border-top::before,
.border-right::before,
.border-bottom::before,
.border-left::before,
.border-topbottom::before,
.border-topbottom::after,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::before,
.border-topleft::after,
.border-rightbottom::before,
.border-rightbottom::after,
.border-topright::before,
.border-topright::after,
.border-bottomleft::before,
.border-bottomleft::after {
content: "\0020";
overflow: hidden;
position: absolute;
}
/* border
- 因，边框是由伪元素区域遮盖在父级
- 故，子级若有交互，需要对子级设置
- 定位 及 z轴
/
.border::before {
box-sizing: border-box;
top: 0;
left: 0;
height: 100%;
width: 100%;
border: 1px solid #eaeaea;
transform-origin: 0 0;
}
.border-top::before,
.border-bottom::before,
.border-topbottom::before,
.border-topbottom::after,
.border-topleft::before,
.border-rightbottom::after,
.border-topright::before,
.border-bottomleft::before {
left: 0;
width: 100%;
height: 1px;
}
.border-right::before,
.border-left::before,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::after,
.border-rightbottom::before,
.border-topright::after,
.border-bottomleft::after {
top: 0;
width: 1px;
height: 100%;
}
.border-top::before,
.border-topbottom::before,
.border-topleft::before,
.border-topright::before {
border-top: 1px solid #eaeaea;
transform-origin: 0 0;
}
.border-right::before,
.border-rightbottom::before,
.border-rightleft::before,
.border-topright::after {
border-right: 1px solid #eaeaea;
transform-origin: 100% 0;
}
.border-bottom::before,
.border-topbottom::after,
.border-rightbottom::after,
.border-bottomleft::before {
border-bottom: 1px solid #eaeaea;
transform-origin: 0 100%;
}
.border-left::before,
.border-topleft::after,
.border-rightleft::after,
.border-bottomleft::after {
border-left: 1px solid #eaeaea;
transform-origin: 0 0;
}
.border-top::before,
.border-topbottom::before,
.border-topleft::before,
.border-topright::before {
top: 0;
}
.border-right::before,
.border-rightleft::after,
.border-rightbottom::before,
.border-topright::after {
right: 0;
}
.border-bottom::before,
.border-topbottom::after,
.border-rightbottom::after,
.border-bottomleft::after {
bottom: 0;
}
.border-left::before,
.border-rightleft::before,
.border-topleft::after,
.border-bottomleft::before {
left: 0;
}
@media (max--moz-device-pixel-ratio: 1.49), (-webkit-max-device-pixel-ratio: 1.49), (max-device-pixel-ratio: 1.49), (max-resolution: 143dpi), (max-resolution: 1.49dppx) {
/ 默认值，无需重置 */
}
@media (min--moz-device-pixel-ratio: 1.5) and (max--moz-device-pixel-ratio: 2.49), (-webkit-min-device-pixel-ratio: 1.5) and (-webkit-max-device-pixel-ratio: 2.49), (min-device-pixel-ratio: 1.5) and (max-device-pixel-ratio: 2.49), (min-resolution: 144dpi) and (max-resolution: 239dpi), (min-resolution: 1.5dppx) and (max-resolution: 2.49dppx) {
.border::before {
width: 200%;
height: 200%;
transform: scale(.5);
}
.border-top::before,
.border-bottom::before,
.border-topbottom::before,
.border-topbottom::after,
.border-topleft::before,
.border-rightbottom::after,
.border-topright::before,
.border-bottomleft::before {
transform: scaleY(.5);
}
.border-right::before,
.border-left::before,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::after,
.border-rightbottom::before,
.border-topright::after,
.border-bottomleft::after {
transform: scaleX(.5);
}
}
@media (min--moz-device-pixel-ratio: 2.5), (-webkit-min-device-pixel-ratio: 2.5), (min-device-pixel-ratio: 2.5), (min-resolution: 240dpi), (min-resolution: 2.5dppx) {
.border::before {
width: 300%;
height: 300%;
transform: scale(.33333);
}
.border-top::before,
.border-bottom::before,
.border-topbottom::before,
.border-topbottom::after,
.border-topleft::before,
.border-rightbottom::after,
.border-topright::before,
.border-bottomleft::before {
transform: scaleY(.33333);
}
.border-right::before,
.border-left::before,
.border-rightleft::before,
.border-rightleft::after,
.border-topleft::after,
.border-rightbottom::before,
.border-topright::after,
.border-bottomleft::after {
transform: scaleX(.33333);
}
}
reset.css
不同浏览器对相同标签的显示效果，有时候往往不同，那么在做项目的时候就需要对基本的样式进行设置，以达到在不同浏览器下显示效果是相同的，reset.css的作用就在于此。
@charset "utf-8";
html {
background-color: #fff;
color: #000;
font-size: 12px
}
body,
ul,
ol,
dl,
dd,
h1,
h2,
h3,
h4,
h5,
h6,
figure,
form,
fieldset,
legend,
input,
textarea,
button,
p,
blockquote,
th,
td,
pre,
xmp {
margin: 0;
padding: 0
}
body,
input,
textarea,
button,
select,
pre,
xmp,
tt,
code,
kbd,
samp {
line-height: 1.5;
font-family: tahoma, arial, "Hiragino Sans GB", simsun, sans-serif
}
h1,
h2,
h3,
h4,
h5,
h6,
small,
big,
input,
textarea,
button,
select {
font-size: 100%
}
h1,
h2,
h3,
h4,
h5,
h6 {
font-family: tahoma, arial, "Hiragino Sans GB", "微软雅黑", simsun, sans-serif
}
h1,
h2,
h3,
h4,
h5,
h6,
b,
strong {
font-weight: normal
}
address,
cite,
dfn,
em,
i,
optgroup,
var {
font-style: normal
}
table {
border-collapse: collapse;
border-spacing: 0;
text-align: left
}
caption,
th {
text-align: inherit
}
ul,
ol,
menu {
list-style: none
}
fieldset,
img {
border: 0
}
img,
object,
input,
textarea,
button,
select {
vertical-align: middle
}
article,
aside,
footer,
header,
section,
nav,
figure,
figcaption,
hgroup,
details,
menu {
display: block
}
audio,
canvas,
video {
display: inline-block;
*display: inline;
*zoom: 1
}
blockquote:before,
blockquote:after,
q:before,
q:after {
content: "\0020"
}
textarea {
overflow: auto;
resize: vertical
}
input,
textarea,
button,
select,
a {
outline: 0 none;
border: none;
}
button::-moz-focus-inner,
input::-moz-focus-inner {
padding: 0;
border: 0
}
mark {
background-color: transparent
}
a,
ins,
s,
u,
del {
text-decoration: none
}
sup,
sub {
vertical-align: baseline
}
html {
overflow-x: hidden;
height: 100%;
font-size: 50px;
-webkit-tap-highlight-color: transparent;
}
body {
font-family: Arial, "Microsoft Yahei", "Helvetica Neue", Helvetica, sans-serif;
color: #333;
font-size: .28em;
line-height: 1;
-webkit-text-size-adjust: none;
}
hr {
height: .02rem;
margin: .1rem 0;
border: medium none;
border-top: .02rem solid #cacaca;
}
a {
color: #25a4bb;
text-decoration: none;
}
