html {
    font-size: 36px;
    background-color: #f4f4f4;
}

body {
    font-family: 'arial';
    -webkit-user-select: none;
    -webkit-text-size-adjust: none;
    -webkit-overflow-scrolling: touch;
    color: #333;
    font-size: 12px;
    min-width: 320px;
}

ul,
ol {
    list-style: none;
}

i,
em,
var,
tt {
    font-style: normal;
}

body,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
p,
form,
input,
textarea,
article,
aside,
details,
figcaption,
figure,
footer,
header,
main,
menu,
nav,
section,
summary,
button {
    margin: 0;
    padding: 0;
}

img {
    border: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: normal;
}

input,
img {
    vertical-align: middle;
}

a:link,
a:visited {
    text-decoration: none;
}

/*
 * 元素被点击的时候产生的背景颜色（各个浏览器有默认颜色）
 */
a,
li,
input,
button,
section,
span,
div {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

/*
 * 去除webkit浏览器对input默认样式
 */
input,
textarea {
    -webkit-appearance: none;
    outline: 0;
}

button {
    border: 0;
    outline: none;
}