/*! 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: 1.5; /* 1 */
  -webkit-text-size-adjust: 100%; /* 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;
}

/* body
   ========================================================================== */
body{background-color: #000;}
.flex {display:flex;justify-content:space-between;flex-wrap:wrap; width: auto;}
.flex_block{display: inline-block;}
.main_content{margin: 10px;}
.clear{clear: both; width: 100%; height: 0;}

.wrapper{margin: 0 0 0 260px;}

#header {
  z-index: 9;
  top: 0;
  left: 0;
  overflow: hidden;
  position: fixed;
  width: 260px;
  height: 100vh;
  background-color: #212529;
}

#header .header-holder{
  z-index: 9;
  margin: 0 auto;
  padding: 0 15px;
  position: relative;
  height: 100%;
}

.footer{
  max-width: 1200px;
  margin: 30px auto;
  font-size: 16px;
  line-height: 2em;
  color: #ccc;
  text-align: center;
}

.logo img{
  width: 100%;
  margin: 40px auto;
}
.navbar{
  text-transform: uppercase;
  font: 700 20px/24px "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 40px;
}
.navbar-nav .nav-item{
  width: 48%;
  display: inline-block;
  overflow: hidden;
}
.navbar-nav .nav-item .nav-link{
  color: #fff;
  letter-spacing: 0.2rem;
}

.navbar-nav .nav-item .nav-link.active{
  color: #ff5403;
}
.navbar-nav .nav-item:hover{
  background-color: #333;
}


section {
  display: flex;
  flex-wrap: wrap;
}

section::after {
  content: '';
  flex-grow: 999999999;
}

.img-wrapper {
  flex-grow: 1;
  margin: 5px;
  background-color: violet;
  height: 250px;
  position: relative;
  overflow: hidden;
}

.img-wrapper img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  min-width: 100%;
  vertical-align: bottom;
}

.img-wrapper .info {
  opacity: 0;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(77, 77, 77, 0.3);
  transition: all 0.5s;
}

.img-wrapper .info .title {
  transition: height 0.5s;
  padding: 0 10px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  line-height: 40px;
  text-align: center;
white-space: nowrap;
  text-overflow: ellipsis;
overflow: hidden;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0;
}

.img-wrapper:hover .info {
  opacity: 1;
}

.img-wrapper:hover .title {
  height: 40px;
}

.img-wrapper:hover img{
  transform:scale(1.01);
}

.page_left{
  position: fixed;
  left: 0;
  top: 50%;
  cursor: pointer;
  width: 24px;
  height: 54px;
  background: url(data:image/png;base64,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) center center no-repeat;
  background-size: 100% 100%; margin-top: -27px;
}

.page_right{
  position: fixed;
  right: 0;
  top: 50%;
  cursor: pointer;
  width: 24px;
  height: 54px;
  background: url(data:image/png;base64,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) center center no-repeat;
  background-size: 100% 100%; margin-top: -27px;
}

.paginator{
  text-align: center;
  margin: 40px 20px 10px;
}

.pure-button {
  display: inline-block;
  zoom: 1;
  line-height: normal;
  white-space: nowrap;
  vertical-align: middle;
  text-align: center;
  -webkit-user-drag: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  box-sizing: border-box;
  font-family: inherit;
  font-size: 14px!important;
  padding: 6px 12px;
  color: #777;
  color: rgba(0,0,0,.8);
  border: 0 transparent;
  background: #fff;
  text-decoration: none!important;
  border-radius: 50px!important;
  margin: 5px 3px;
}

.paginator .next, .paginator .prev {
  padding-left: 20px;
  padding-right: 20px;
  background: #f6f5fa;
  color: red;
}

.paginator span.pure-button {
  background: #02be6e!important;
  color: #fff;
  cursor: default;
}

.paginator i {
  font-style: normal;
  display: inline-block;
  font-size: 20px;
  overflow: hidden;
  line-height: 12px;
}

.paginator .next.off, .paginator .prev.off{
  color: #999;
  display: none;
}

.nav_page .page_right.off, .nav_page .page_left.off{
  display: none;
}

#sideNav{background: #212529;}

/********************* 内容页 **********************/
.cont_nav{width: 100%; margin-top: 10px; padding-top: 10px; border-top: 1px dashed #d3d3d3; color: #fff;}
.cont_nav_text{color: #fff; font-size: 18px; margin-bottom: 5px;}
.cont_nav_in{max-width: 1200px; padding: 15px; margin: 0 auto; color: #666;}
.cont_nav_pre,.cont_nav_next{width: 48%;white-space: nowrap;text-overflow:ellipsis; overflow:hidden;}
.cont_nav_next{text-align: right;}

.sub_cont{margin: 0 auto ; max-width: 1200px; padding:15px;}
.sub_cont img{max-width: 100%;}
.sub_cont_l{width: 100%; float: left; color: #fff;}
.sub_cont_r{width: calc(30% - 20px); box-shadow: 0 0 14px 0 rgba(0,0,0,0.15); margin-right: -15px; padding: 15px; float: right; display: none;}

.c_title{font-size: 18px; font-weight: bold; text-align: center; margin-bottom: 20px; padding-bottom: 15px; border-bottom: 1px dashed #d3d3d3;}

.c_tags{font-size: 16px; margin-bottom: 10px; text-align: center;}
.c_tags a{margin-right: 5px;}

.c_img{padding: 10px; margin-bottom: 2px;}
.c_img img{max-width: 100%; display: block; cursor: zoom-in; margin: auto;}
.c_main1{margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px dashed #d3d3d3;}

/********************* 错误页 **********************/
.error{text-align: center; overflow: hidden; height: calc(100vh - 100px); line-height: calc(100vh - 100px);}
.error img{width: 100%; max-width: 500px;}

@media only screen and (max-width: 768px){  
  #header{position: static;}
  .logo{width: 60%;}
  .logo img{margin: 10px auto;}
  .main_content{padding-top: 10px;}
  .error{height: auto; line-height: 0; margin-top: 100px;}

  .img-wrapper{height: 120px;}
  .img-wrapper img{height: 120px;}
}