* {
    margin: 0;
    padding: 0;
}

body {
    min-width: 1200px;
}

a {
    text-decoration: none;
    color: #333;
}

li {
    list-style-type: none;
}

i {
    font-style: normal;
}

.left {
    float: left;
}

.right {
    float: right;
}

.h10 {
    height: 10px;
    width: 100%;
    clear: both;
}

.h15 {
    height: 15px;
    width: 100%;
    clear: both;
}

.h20 {
    height: 20px;
    width: 100%;
    clear: both;
}

.h30 {
    height: 30px;
    width: 100%;
    clear: both;
}

.h150 {
    width: 100%;
    height: 150px;
}

.w {
    box-sizing: border-box;
    width: 1200px;
    margin: 0 auto;
}

.clear {
    clear: both;
}

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

.mr0 {
    margin-right: 0 !important;
}

.line1 {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.line2 {
    word-break: break-all;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}


/* 顶部搜索 */

.top_search {
    position: relative;
    height: 80px;
}

.top_search p {
    float: left;
    color: #999;
    margin-top: 30px;
    margin-left: 10px;
}

.center {
    box-sizing: border-box;
    position: absolute;
    left: 50%;
    top: 15px;
    transform: translateX(-30%);
    float: left;
    height: 40px;
}

.center form>input {
    padding-left: 20px;
    border-radius: 20px 0 0 20px;
    width: 244px;
    height: 38px;
    outline: none;
    border: 1px solid #999;
    border-right: 0;
    float: left;
    color: #aaa;
}

.center .search {
    position: relative;
    float: left;
    width: 75px;
    background-color: #4eabd6;
    height: 40px;
    border-radius: 0 20px 20px 0;
}

.center .search input {
    float: left;
    width: 75px;
    height: 40px;
    border-radius: 0 20px 20px 0;
    outline: none;
    border: none;
    opacity: 0;
    cursor: pointer;
}

.center .search img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}


/* 顶部导航 */

.top_nav {
    width: 100%;
    height: 64px;
    border-top: 1px solid #aaa;
    border-bottom: 1px solid #aaa;
    margin-bottom: 10px;
}

.top_nav a {
    display: inline-block;
    padding: 8px 20px;
    margin: 15px 0;
    color: #aaa;
    /* margin-right: 10px; */
    font-size: 16px;
}

.top_nav a:hover {
    background-color: #4eabd6;
    color: #eee;
    border-radius: 5px;
}

.top_nav .right_change {
    float: right;
    color: #aaa;
    font-size: 20px;
}

.top_nav .right_change span {
    height: 64px;
    cursor: pointer;
}

.right_change span a {
    display: inline-block;
    padding: 8px 20px;
    margin: 15px 0;
    color: #aaa;
}


/* footer */

.footer {
    background-color: #eeeeee;
    width: 100%;
    /* height: 230px; */
    padding-bottom: 20px;
}

.footer .w {
    text-align: center;
}

.footer .net {
    text-align: center;
    display: inline-block;
    margin: 37px auto 22px;
}

.footer .net a {
    display: block;
    float: left;
    border: 1px solid #333;
    width: 135px;
    font-size: 7px;
    color: #333;
    height: 24px;
    line-height: 24px;
    margin: 0 18px;
}

.footer p {
    font-size: 12px;
    color: #333;
    height: 40px;
    line-height: 40px;
}

.footer p span {
    display: inline-block;
    width: 15px;
}

.footer .icon {
    display: inline-block;
}

.footer .box {
    text-align: center;
}

.footer .text {
    margin-right: 20px;
    display: inline-block;
}

.footer .text p {
    display: inline-block;
    vertical-align: bottom
}

.pt_Firsttext a {
    display: inline-block;
    padding: 0 10px;
}


/* 公共样式 */


/* topbgnav end */


/* footer start */


/*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */


/* Document
   ========================================================================== */


/**
 * 1. Correct the line height in all browsers.
 * 2. Prevent adjustments of font size after orientation changes in iOS.
 */

html {
    line-height: 1.15;
    /* 1 */
    -webkit-text-size-adjust: 100%;
    font-family: '微软雅黑,Microsoft YaHei';
    /* 2 */
}


/* Sections
     ========================================================================== */


/**
   * Remove the margin in all browsers.
   */

body {
    margin: 0;
}


/**
   * Render the `main` element consistently in IE.
   */

main {
    display: block;
}


/**
   * Correct the font size and margin on `h1` elements within `section` and
   * `article` contexts in Chrome, Firefox, and Safari.
   */

h1 {
    font-size: 2em;
    margin: 0.67em 0;
}


/* Grouping content
     ========================================================================== */


/**
   * 1. Add the correct box sizing in Firefox.
   * 2. Show the overflow in Edge and IE.
   */

hr {
    box-sizing: content-box;
    /* 1 */
    height: 0;
    /* 1 */
    overflow: visible;
    /* 2 */
}


/**
   * 1. Correct the inheritance and scaling of font size in all browsers.
   * 2. Correct the odd `em` font sizing in all browsers.
   */

pre {
    font-family: monospace, monospace;
    /* 1 */
    font-size: 1em;
    /* 2 */
}


/* Text-level semantics
     ========================================================================== */


/**
   * Remove the gray background on active links in IE 10.
   */

a {
    background-color: transparent;
}


/**
   * 1. Remove the bottom border in Chrome 57-
   * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
   */

abbr[title] {
    border-bottom: none;
    /* 1 */
    text-decoration: underline;
    /* 2 */
    text-decoration: underline dotted;
    /* 2 */
}


/**
   * Add the correct font weight in Chrome, Edge, and Safari.
   */

b,
strong {
    font-weight: bolder;
}


/**
   * 1. Correct the inheritance and scaling of font size in all browsers.
   * 2. Correct the odd `em` font sizing in all browsers.
   */

code,
kbd,
samp {
    font-family: monospace, monospace;
    /* 1 */
    font-size: 1em;
    /* 2 */
}


/**
   * Add the correct font size in all browsers.
   */

small {
    font-size: 80%;
}


/**
   * Prevent `sub` and `sup` elements from affecting the line height in
   * all browsers.
   */

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sub {
    bottom: -0.25em;
}

sup {
    top: -0.5em;
}


/* Embedded content
     ========================================================================== */


/**
   * Remove the border on images inside links in IE 10.
   */

img {
    border-style: none;
}


/* Forms
     ========================================================================== */


/**
   * 1. Change the font styles in all browsers.
   * 2. Remove the margin in Firefox and Safari.
   */

button,
input,
optgroup,
select,
textarea {
    font-family: inherit;
    /* 1 */
    font-size: 100%;
    /* 1 */
    line-height: 1.15;
    /* 1 */
    margin: 0;
    /* 2 */
}


/**
   * Show the overflow in IE.
   * 1. Show the overflow in Edge.
   */

button,
input {
    /* 1 */
    overflow: visible;
}


/**
   * Remove the inheritance of text transform in Edge, Firefox, and IE.
   * 1. Remove the inheritance of text transform in Firefox.
   */

button,
select {
    /* 1 */
    text-transform: none;
}


/**
   * Correct the inability to style clickable types in iOS and Safari.
   */

button,
[type="button"],
[type="reset"],
[type="submit"] {
    -webkit-appearance: button;
}


/**
   * Remove the inner border and padding in Firefox.
   */

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
    border-style: none;
    padding: 0;
}


/**
   * Restore the focus styles unset by the previous rule.
   */

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
    outline: 1px dotted ButtonText;
}


/**
   * Correct the padding in Firefox.
   */

fieldset {
    padding: 0.35em 0.75em 0.625em;
}


/**
   * 1. Correct the text wrapping in Edge and IE.
   * 2. Correct the color inheritance from `fieldset` elements in IE.
   * 3. Remove the padding so developers are not caught out when they zero out
   *    `fieldset` elements in all browsers.
   */

legend {
    box-sizing: border-box;
    /* 1 */
    color: inherit;
    /* 2 */
    display: table;
    /* 1 */
    max-width: 100%;
    /* 1 */
    padding: 0;
    /* 3 */
    white-space: normal;
    /* 1 */
}


/**
   * Add the correct vertical alignment in Chrome, Firefox, and Opera.
   */

progress {
    vertical-align: baseline;
}


/**
   * Remove the default vertical scrollbar in IE 10+.
   */

textarea {
    overflow: auto;
}


/**
   * 1. Add the correct box sizing in IE 10.
   * 2. Remove the padding in IE 10.
   */

[type="checkbox"],
[type="radio"] {
    box-sizing: border-box;
    /* 1 */
    padding: 0;
    /* 2 */
}


/**
   * Correct the cursor style of increment and decrement buttons in Chrome.
   */

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
    height: auto;
}


/**
   * 1. Correct the odd appearance in Chrome and Safari.
   * 2. Correct the outline style in Safari.
   */

[type="search"] {
    -webkit-appearance: textfield;
    /* 1 */
    outline-offset: -2px;
    /* 2 */
}


/**
   * Remove the inner padding in Chrome and Safari on macOS.
   */

[type="search"]::-webkit-search-decoration {
    -webkit-appearance: none;
}


/**
   * 1. Correct the inability to style clickable types in iOS and Safari.
   * 2. Change font properties to `inherit` in Safari.
   */

 ::-webkit-file-upload-button {
    -webkit-appearance: button;
    /* 1 */
    font: inherit;
    /* 2 */
}


/* Interactive
     ========================================================================== */


/*
   * Add the correct display in Edge, IE 10+, and Firefox.
   */

details {
    display: block;
}


/*
   * Add the correct display in all browsers.
   */

summary {
    display: list-item;
}


/* Misc
     ========================================================================== */


/**
   * Add the correct display in IE 10+.
   */

template {
    display: none;
}


/**
   * Add the correct display in IE 10.
   */

[hidden] {
    display: none;
}