html {
    color: #333;
    /*規定主色調,依據業務場景(非必須)*/
    background: #F6F6F6;
    /*規定主背景,依據業務場景(非必須)*/
    overflow-y: auto;
    /*如果有溢出自動形成滾動條*/
    -webkit-text-size-adjust: 100%;
    /*不想讓iPhone橫堅屏切換的時候調節文字*/
    -ms-text-size-adjust: 100%;
}

html * { /*所有元素*/
    outline: none;
    -webkit-tap-highlight-color
 
: rgba(0, 0, 0, 0); /*去除移動端開發點擊事件灰色背景如a標簽*/
}

body,html{
    height: 100%;
}
article,
aside,
blockquote,
body,
button,
code,
dd,
details,
div,
dl,
dt,
fieldset,
figcaption,
figure,
footer,
form,
h1,
h2,
h3,
h4,
h5,
h6,
header,
hgroup,
hr,
input,
legend,
li,
menu,
nav,
ol,
p,
pre,
section,
td,
textarea,
th,
ul 
 
{
    margin: 0;
    padding: 0;
}

input,
select,
textarea {
    font-size: 100%;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

fieldset,
img {
    border: none;
}

address,
caption,
cite,
code,
dfn,
em,
th,
var {
    font-style: normal;
    font-weight: 500;
}

ol,
ul {
    list-style
 
: none;
}


h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 100%;
    font-weight: 500;
}

q:after,
q:before {  /*在<q></q>標簽之間的文字兩頭加上引號*/
    content: ‘‘;
}

a{
    text-decoration: none;
}

/*input*/
button {
    border: none;
}

button,
html input[type=‘button‘],
input[type=‘reset‘],
input[type=‘submit‘] {
    -webkit-appearance: button;  /*渲染成button的風格*/
    text-transform: none;
    outline: none;
}

input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder {
    color: #999;  /*輸入框提示語的字體樣式*/
}

input::-webkit-inner-spin-button {/*解決input的type="number"在部分手機端會出現一個小按鈕*/
    -webkit-appearance: none;/*去除系統默認appearance的樣式,常用於IOS下移除原生樣式*/
}

input::-webkit-outer-spin-button {/*解決input的type="number"在部分手機端會出現一個小按鈕*/
    -webkit-appearance: none;
}

textarea {
    vertical-align: top;
}

button,
input {
    line-height: normal;
}

select {
    margin: 0;
    outline: 0;
}

input.fixAKeyboard:focus,
textarea.fixAndroidKeyboard:focus {
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
    -webkit-user-modify: read-write-plaintext-only;
}

input:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px white inset !important;
}

button,
input[type=button],
input[type=checkbox],
input[type=reset],
input[type=submit],
label {
    cursor: pointer;
    user-select: none;
    -ms-user-select: none;
    -moz-user-select: none;
    -webkit-user-select: none;
}

input[type=submit] {
    -webkit-user-modify: read-plaintext-only;
    -moz-user-modify: read-plaintext-only;
    -ms-user-modify: read-plaintext-only;
    -o-user-modify: read-plaintext-only;
    user-modify: read-plaintext-only;
}

input[type=‘search‘]::-webkit-search-cancel-button,
input[type=‘search‘]::-webkit-search-decoration {
    -webkit-appearance: none;
}

input[type=‘search‘] {
    -webkit-box-sizing: content-box;
    -moz-box-sizing: content-box;
    box-sizing: content-box;
    -webkit-appearance: textfield;
}


/*flex box*/
.flex {
    display: box;
    /* OLD - Android 4.4- */
    display: -webkit-box;
    /* OLD - iOS 6-, Safari 3.1-6 */
    display: -moz-box;
    /* OLD - Firefox 19- (buggy but mostly works) */
    display: -ms-flexbox;
    /* TWEENER - IE 10 */
    display: -webkit-flex;
    /* NEW - Chrome */
    display: flex;
    -webkit-box-lines: multiple;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
}

.justify-between {
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.justify-center {
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.vertical {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
}

*,
*:before,
*:after {
    box-sizing: border-box; /*所有元素以border開始計算盒子大小*/
}

.clearfix:after,
.clearfix:before {   /*清除浮動*/
    content: " ";
    display: table;
}

.clearfix:after {
    clear: both;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

百分比布局，也叫做流式布局；
清除移動端默認的點擊高亮效果：-webkit-tap-highlight-color:transparent;
base.css:
*,::before,::after{
padding:0;
margin:0;
-webkit-box-sizing:border-box; //主流瀏覽器做兼容；
box-sizing:border-box;
}

input{
border:none;
outline:none;
-webkit-appearance;//清除移動端默認的表單樣式；如內陰影效果；
}

布局時候搜索框包一個form可以實現小鍵盤的箭頭變為搜索二字；

移動端好用的reset.css