/** reset **/
body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
pre,
form,
fieldset,
legend,
button,
input,
textarea,
th,
td,
img {
    border: medium none;
    margin: 0;
    padding: 0;
    letter-spacing: .5px;
    outline: none;
}

body,
button,
input,
select,
textarea {
    font: 14px/1.5 '微软雅黑', tahoma, Srial, helvetica, sans-serif;
    color: #333;
    letter-spacing: .5px;
}

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

em {
    font-style: normal;
}

ul,
ol,
li {
    list-style: none;
}

a {
    text-decoration: none;
    color: #333;
    letter-spacing: .5px;
}

img {
    border: 0px;
    outline-width: 0px;
    vertical-align: middle;
    max-width: 100%;
    height: auto;
    max-height: 100%;
}

a:hover {
    color: #2276B6;
}

.clearfix:after {
    content: "";
    display: block;
    clear: both;
    height: 0;
    visibility: hidden;
}

.clearfix {
    zoom: 1;
}

.flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}