css初始化文件

/*初始化类*/

@charset "UTF-8";
html {
    font-family: sans-serif;
    font-size: 20px;
}

html,
body {
    -webkit-touch-callout: none;
    -webkit-text-size-adjust: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-user-select: none;
    width: 100%;
    height: 100%;
}

body {
    line-height: 1.5;
    font-size: 0.8rem;
    color: #212121;
    background-color: #f5f5f5;
    outline: 0;
}

html,
body,
header,
section,
footer,
div,
ul,
ol,
li,
img,
a,
span,
em,
del,
legend,
center,
strong,
var,
fieldset,
form,
label,
dl,
dt,
dd,
cite,
input,
hr,
time,
mark,
code,
figcaption,
figure,
textarea,
h1,
h2,
h3,
h4,
h5,
h6,
p {
    margin: 0;
    border: 0;
    padding: 0;
    font-style: normal;
}

* {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

@media only screen and (min-width: 400px) {
    html {
        font-size: 21.33333333px !important;
    }
}

@media only screen and (min-width: 410.2rem) {
    html {
        font-size: 21px !important;
    }
}

@media only screen and (min-width: 480px) {
    html {
        font-size: 25.6px !important;
    }
}

ul,
li {
    list-style: none;
}

p {
    font-size: 0.7rem;
    color: #757575;
}

a {
    color: #0062cc;
    text-decoration: none;
    background-color: transparent;
}

a:hover {
    outline: 0;
}

textarea {
    overflow: hidden;
    resize: none;
}

button {
    overflow: visible;
}

button,
select {
    text-transform: none;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}


/*文字、背景颜色*/

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 400;
}

h1 {
    font-size: 1.2rem;
}

h2 {
    font-size: 1rem;
}

h3 {
    font-size: 0.8rem;
}

h4 {
    font-size: 0.7rem;
}

h5 {
    font-size: 0.7rem;
    font-weight: normal;
    color: #757575;
}

h6 {
    font-size: 0.7rem;
    font-weight: normal;
    color: #757575;
}

h1 small,
h2 small,
h3 small,
h4 small {
    font-weight: normal;
    line-height: 1;
    color: #757575;
}

h5 small,
h6 small {
    font-weight: normal;
    line-height: 1;
    color: #757575;
}

h1 small,
h2 small,
h3 small {
    font-size: 65%;
}

h4 small,
h5 small,
h6 small {
    font-size: 75%;
}


/*flex 布局*/
.wrap {
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-flex-wrap: wrap
}

.flex {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -webkit-align-items: center;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-justify-content: space-between
}

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

.flex.j_start {
    -ms-flex-pack: start;
    justify-content: flex-start;
    -webkit-justify-content: flex-start
}

.flex.j_end {
    -ms-flex-pack: end;
    justify-content: flex-end;
    -webkit-justify-content: flex-end
}

.flex.j_around {
    -ms-flex-pack: distribute;
    justify-content: space-around;
    -webkit-justify-content: space-around
}
.flex.j_between {
    -ms-flex-pack: distribute;
    justify-content: space-between;
    -webkit-justify-content: space-between
}

.flex.a_start {
    -ms-flex-align: start;
    align-items: flex-start;
    -webkit-align-items: flex-start
}

.flex.a_end {
    -ms-flex-align: end;
    align-items: flex-end;
    -webkit-align-items: flex-end
}

.flex.a_baseline {
    -ms-flex-align: baseline;
    align-items: baseline;
    -webkit-align-items: baseline
}