body,
div,
ul,
li,
h1,
h2,
h3,
h4,
h5,
h6,
p,
dl,
dt,
dd,
ol,
form,
input,
textarea,
th,
td,
select {
    margin: 0;
    padding: 0;
}

* {
    box-sizing: border-box;
}

table {
    border-collapse: collapse;
}

body {
    font-family: "Microsoft YaHei";
}

ul,
li {
    list-style: none;
}

a {
    text-decoration: none!important;
    color: #333;
    display: block;
}

input,
textarea {
    outline: none;
    box-shadow: none;
}

textarea {
    resize: none;
    overflow: auto;
}

.clearfix {
    zoom: 1;
}

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

.fl {
    float: left
}

.fr {
    float: right
}

.tl {
    text-align: left;
}

.tc {
    text-align: center
}

.tr {
    text-align: right;
}

.ellipse {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.w {
    width: 1200px;
    margin: 0 auto;
}

nav {
    text-align: center;
}

.f15 {
    font-size: 15px;
}

.f16 {
    font-size: 16px;
}

.f17 {
    font-size: 17px;
}

.f18 {
    font-size: 18px;
}

.overflow1 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}

.overflow2 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.overflow3 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

::-webkit-scrollbar {
    display: none;
}