@media screen and (min-width:640px){
    #demo img{
        display: none;
    }
    #demo .carousel-inner .carousel-bg1{
        background: url(../images/Ca/C1.png) no-repeat center center;
        width: 100%;
        height: 410px;
    }
    #demo .carousel-inner .carousel-bg2{
        background: url(../images/Ca/C2.png) no-repeat center center;
        width: 100%;
        height: 410px;
    }
    #demo .carousel-inner .carousel-bg3{
        background: url(../images/Ca/C3.png) no-repeat center center;
        width: 100%;
        height: 410px;
    }
    #demo .carousel-inner .carousel-bg4{
        background: url(../images/Ca/C4.png) no-repeat center center;
        width: 100%;
        height: 410px;
    }
    #demo .carousel-inner .carousel-bg5{
        background: url(../images/Ca/C5.png) no-repeat center center;
        width: 100%;
        height: 410px;
    }
}

@media screen and (max-width:640px){
    #demo img{
        display: block;
    }
    
}

/* .navbar{
    background-image:url("../images/backgrounds/img-1.jpg");
} */
/* 
#company{
font-size:xx-large
} */


@media (max-width: 767px){.btn-container{margin-top:2rem}}@media (max-width: 991px){.btn-container>.btn,.btn-container>.btn-group{margin-bottom:1rem}}@media (min-width: 992px){.btn-container>.btn,.btn-container>.btn-group{margin-right:1.5rem;margin-bottom:1rem}}@media (min-width: 1200px){.content:not(.content--boxed):not(.content--full){padding:0 0 0 240px}}@media (min-width: 576px) and (max-width: 1199px){.content:not(.content--boxed):not(.content--full){padding:102px 30px 0}}@media (max-width: 575px){.content:not(.content--boxed):not(.content--full){padding:87px 15px 0}}@media (min-width: 576px){.content--full{padding:102px 30px 0}}@media (max-width: 767px){.content--full{padding:87px 15px 0}}.content-inner{margin:auto;padding:30px 15px}.content-inner .example{margin-bottom:5rem}@media (max-width: 767px){.content-inner .example .btn{margin-bottom:1rem}}.header{width:100%;height:72px;color:#FFFFFF;padding:0 30px 0 2rem;z-index:10;display:flex;align-items:center;top:0;left:0;background:#FFF;border-bottom:1px solid #e9ecef}@media (max-width: 1199px){.header{position:fixed}}@media (max-width: 575px){.header{padding-left:15px;padding-right:15px}}.header::after{display:block;content:"";clear:both}.header .body-backdrop{position:absolute}.navigation-trigger{float:left;padding:2rem 2rem 2rem 2.4rem;margin-left:-2rem}.navigation-trigger:hover{cursor:pointer}.navigation-trigger.toggled .navigation-trigger-inner{transform:rotate(180deg)}.navigation-trigger.toggled .navigation-trigger-inner:before{transform:scale(1)}.navigation-trigger.toggled .navigation-trigger-line:first-child{width:12px;transform:translateX(8px) translateY(1px) rotate(45deg)}.navigation-trigger.toggled .navigation-trigger-line:last-child{width:11px;transform:translateX(8px) translateY(-1px) rotate(-45deg)}.navigation-trigger-inner,.navigation-trigger-line{width:18px;transition:all 300ms}.navigation-trigger-inner{position:relative}.navigation-trigger-inner:before{content:'';position:absolute;width:40px;height:40px;left:-11px;top:-14px;background-color:rgba(0,0,0,0.25);border-radius:50%;transition:all 300ms;transform:scale(0)}.navigation-trigger-line{height:2px;background-color:#333;display:block;position:relative}.navigation-trigger-line:not(:last-child){margin-bottom:3px}@media (min-width: 1200px){.header-brand{min-width:calc(270px - 2rem)}}.header-brand>h1{line-height:100%;font-size:1.3rem;font-weight:normal;margin:0}.header-brand>h1>a{color:#999}.header-nav .nav-link{padding:0 1rem;font-size:.765625rem;color:#adb5bd;transition:background-color 300ms}.header-nav .nav-link:hover{color:#343a40}.sidebar{width:240px;position:fixed;left:0;padding:0 0.5rem 0.5rem 1.5rem;height:100%;overflow:hidden;z-index:1050;background-color:#fff;border-right:1px solid #e9ecef}@media (max-width: 1199px){.sidebar{transition:transform 300ms, opacity 300ms}.sidebar:not(.toggled){opacity:0;transform:translate3d(-100%, 0, 0)}.sidebar.toggled{box-shadow:5px 0 10px rgba(0,0,0,0.08);opacity:1;transform:translate3d(0, 0, 0)}}.sidebar-brand{height:72px;padding:1rem 0}.sidebar-brand>h1{transform:translateY(50%);font-size:1.09375rem;font-weight:normal;margin:0}.sidebar-brand>h1>a{color:#343a40}.sidebar .scrollbar-inner>.scroll-element{margin-right:0}.sidebar--hidden{background-color:#FFFFFF;transition:transform 300ms, opacity 300ms}.sidebar--hidden:not(.toggled){opacity:0;transform:translate3d(-100%, 0, 0)}.sidebar--hidden.toggled{box-shadow:5px 0 10px rgba(0,0,0,0.08);opacity:1;transform:translate3d(0, 0, 0)}.navigation{list-style:none;padding:0;padding-bottom:4rem}.navigation .navigation-title{color:#adb5bd;font-weight:600;margin:0.875rem 0 0;padding:1rem 0rem 0.875rem}.navigation .navigation-item{color:#fff;font-weight:500}.navigation .navigation-link{display:block;padding:0.25rem 1rem;color:#495057;font-weight:500;-webkit-transition:background 0.3s, box-shadow 0.3s;transition:background 0.3s, box-shadow 0.3s;border-radius:.375rem;text-decoration:none}.navigation .navigation-link:hover,.navigation .navigation-link.active{color:#288cff}.scrollbar-inner{height:100%}.scrollbar-inner>.scroll-element{transition:opacity 300ms;margin-right:2px}.scrollbar-inner>.scroll-element.scroll-y{width:3px;right:0}.scrollbar-inner>.scroll-element.scroll-x{height:3px;bottom:0}.scrollbar-inner>.scroll-element .scroll-bar,.scrollbar-inner>.scroll-element .scroll-element_track{transition:background-color 300ms}.scrollbar-inner>.scroll-element .scroll-element_track{background-color:transparent}.scrollbar-inner:not(:hover) .scroll-element{opacity:0}.page-title{position:relative;padding-bottom:1rem;margin-bottom:1rem;border-bottom:1px solid #e9ecef}.page-title .heading{margin:0;padding:0;color:#212529}.page-title .heading a{color:#212529}@media (min-height: 600px) and (min-width: 767px){.background-image-holder[data-holder-type="hero"]{height:80vh}}.background-image-holder .holder-item{height:100%;padding:2rem 0}@media (max-width: 991px){.background-image-holder .holder-item{height:auto;padding:4rem 0}}.background-image-holder .swiper-container,.background-image-holder .container{position:relative;height:100%}.background-image-holder .swiper-container .swiper-slide .animated{opacity:0}.background-image-holder .swiper-container .swiper-slide .animated.animation-ended{opacity:1}.bg-cover{position:relative}.bg-size--cover{background-size:cover;background-repeat:no-repeat}.bg-size--contain{background-size:contain;background-repeat:no-repeat}.typeface-palette .typeface-entry{position:relative;display:block;padding:2rem;background:#fff;border:1px solid rgba(0,0,0,0.05);border-radius:.375rem}.typeface-badge{position:absolute;top:10px;right:10px}.color-palette .color-entry{position:relative;display:block;height:170px;color:#FFF;border-radius:.375rem}.color-palette .color-entry .color-code{background:#fff;color:#495057;padding:6px 10px;position:absolute;bottom:12px;right:12px}.content-docs h2[id]::before,.content-docs h3[id]::before,.content-docs h4[id]::before{content:"";display:block;height:3rem;margin-top:-3rem}.content-docs h2[id]:not(:first-child),.content-docs h3[id]:not(:first-child),.content-docs h4[id]:not(:first-child){margin-top:5rem}.content-docs h2[id],.content-docs h3[id],.content-docs h4[id]{margin-bottom:2rem}.highlight pre{padding:1.5rem;background:#f8f9fa;border:1px solid #dee2e6;border-radius:.375rem}.code-example{margin:2rem 0}.code-clipboard{position:relative}.btn-clipboard{position:absolute;top:.5rem;right:.5rem;z-index:10;display:block;padding:.25rem .5rem;font-size:75%;color:#818a91;cursor:pointer;background-color:transparent;border:0;border-radius:.25rem}.btn-clipboard:hover{color:#fff;background-color:#027de7}.toc-entry{display:block}.toc-entry a{display:block;padding:.125rem 1.5rem;color:#99979c}.toc-entry a:hover{color:#007bff;text-decoration:none}


/* #z1：hover{
transform: scale(1.5);
} */


img:hover{
    transform: scale(1.5);
}
img{    
    cursor: pointer;    
    transition: all 0.6s;    
}    
@media (max-width: 450px){
    #size{
        font-size: 34px;
        font-weight:700px;
    }
    #s1,#s2,#s3,#s4{
        font-size:24px;
        font-weight:550px;
    }
    #isize{width: 17%;}
}

@media (max-width: 438px){
    #size{
        font-size: 30px;
        font-weight:700px;
    }
    #s1,#s2,#s3,#s4{
        font-size:20px;
        font-weight:550px;
    }
}
@media (max-width: 390px){
    #size{
        font-size: 26px;
        font-weight:700px;
    }
    #s1,#s2,#s3,#s4{
        font-size:16px;
        font-weight:550px;
    }
}
@media (max-width: 342px){
    #size{
        font-size: 22px;
        font-weight:700px;
    }
    #s1,#s2,#s3,#s4{
        font-size:12px;
        font-weight:550px;
    }
}

@media (max-width: 294px){
    #size{
        font-size: 18px;
        font-weight:700px;
    }
    #s1,#s2,#s3,#s4{
        font-size:8px;
        font-weight:550px;
    }
}

/* #one{
   height: ;
} */


.logo{
    width: 100px;
    height: 60px;
}

@media (max-width: 767px) {
    .btn-container {
        margin-top: 2rem
    }
}

@media (max-width: 991px) {

    .btn-container>.btn,
    .btn-container>.btn-group {
        margin-bottom: 1rem
    }
}

@media (min-width: 992px) {

    .btn-container>.btn,
    .btn-container>.btn-group {
        margin-right: 1.5rem;
        margin-bottom: 1rem
    }
}

@media (min-width: 1200px) {
    .content:not(.content--boxed):not(.content--full) {
        padding: 0 0 0 240px
    }
}

@media (min-width: 576px) and (max-width: 1199px) {
    .content:not(.content--boxed):not(.content--full) {
        padding: 102px 30px 0
    }
}

@media (max-width: 575px) {
    .content:not(.content--boxed):not(.content--full) {
        padding: 87px 15px 0
    }
}

@media (min-width: 576px) {
    .content--full {
        padding: 102px 30px 0
    }
}

@media (max-width: 767px) {
    .content--full {
        padding: 87px 15px 0
    }
}

.content-inner {
    margin: auto;
    padding: 30px 15px
}

.content-inner .example {
    margin-bottom: 5rem
}

@media (max-width: 767px) {
    .content-inner .example .btn {
        margin-bottom: 1rem
    }
}

.header {
    width: 100%;
    height: 72px;
    color: #FFFFFF;
    padding: 0 30px 0 2rem;
    z-index: 10;
    display: flex;
    align-items: center;
    top: 0;
    left: 0;
    background: #FFF;
    border-bottom: 1px solid #e9ecef
}

@media (max-width: 1199px) {
    .header {
        position: fixed
    }
}

@media (max-width: 575px) {
    .header {
        padding-left: 15px;
        padding-right: 15px
    }
}

.header::after {
    display: block;
    content: "";
    clear: both
}

.header .body-backdrop {
    position: absolute
}

.navigation-trigger {
    float: left;
    padding: 2rem 2rem 2rem 2.4rem;
    margin-left: -2rem
}

.navigation-trigger:hover {
    cursor: pointer
}

.navigation-trigger.toggled .navigation-trigger-inner {
    transform: rotate(180deg)
}

.navigation-trigger.toggled .navigation-trigger-inner:before {
    transform: scale(1)
}

.navigation-trigger.toggled .navigation-trigger-line:first-child {
    width: 12px;
    transform: translateX(8px) translateY(1px) rotate(45deg)
}

.navigation-trigger.toggled .navigation-trigger-line:last-child {
    width: 11px;
    transform: translateX(8px) translateY(-1px) rotate(-45deg)
}

.navigation-trigger-inner,
.navigation-trigger-line {
    width: 18px;
    transition: all 300ms
}

.navigation-trigger-inner {
    position: relative
}

.navigation-trigger-inner:before {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    left: -11px;
    top: -14px;
    background-color: rgba(0, 0, 0, 0.25);
    border-radius: 50%;
    transition: all 300ms;
    transform: scale(0)
}

.navigation-trigger-line {
    height: 2px;
    background-color: #333;
    display: block;
    position: relative
}

.navigation-trigger-line:not(:last-child) {
    margin-bottom: 3px
}

@media (min-width: 1200px) {
    .header-brand {
        min-width: calc(270px - 2rem)
    }
}

.header-brand>h1 {
    line-height: 100%;
    font-size: 1.3rem;
    font-weight: normal;
    margin: 0
}

.header-brand>h1>a {
    color: #999
}

.header-nav .nav-link {
    padding: 0 1rem;
    font-size: .765625rem;
    color: #adb5bd;
    transition: background-color 300ms
}

.header-nav .nav-link:hover {
    color: #343a40
}

.sidebar {
    width: 240px;
    position: fixed;
    left: 0;
    padding: 0 0.5rem 0.5rem 1.5rem;
    height: 100%;
    overflow: hidden;
    z-index: 1050;
    background-color: #fff;
    border-right: 1px solid #e9ecef
}

@media (max-width: 1199px) {
    .sidebar {
        transition: transform 300ms, opacity 300ms
    }

    .sidebar:not(.toggled) {
        opacity: 0;
        transform: translate3d(-100%, 0, 0)
    }

    .sidebar.toggled {
        box-shadow: 5px 0 10px rgba(0, 0, 0, 0.08);
        opacity: 1;
        transform: translate3d(0, 0, 0)
    }
}

.sidebar-brand {
    height: 72px;
    padding: 1rem 0
}

.sidebar-brand>h1 {
    transform: translateY(50%);
    font-size: 1.09375rem;
    font-weight: normal;
    margin: 0
}

.sidebar-brand>h1>a {
    color: #343a40
}

.sidebar .scrollbar-inner>.scroll-element {
    margin-right: 0
}

.sidebar--hidden {
    background-color: #FFFFFF;
    transition: transform 300ms, opacity 300ms
}

.sidebar--hidden:not(.toggled) {
    opacity: 0;
    transform: translate3d(-100%, 0, 0)
}

.sidebar--hidden.toggled {
    box-shadow: 5px 0 10px rgba(0, 0, 0, 0.08);
    opacity: 1;
    transform: translate3d(0, 0, 0)
}

.navigation {
    list-style: none;
    padding: 0;
    padding-bottom: 4rem
}

.navigation .navigation-title {
    color: #adb5bd;
    font-weight: 600;
    margin: 0.875rem 0 0;
    padding: 1rem 0rem 0.875rem
}

.navigation .navigation-item {
    color: #fff;
    font-weight: 500
}

.navigation .navigation-link {
    display: block;
    padding: 0.25rem 1rem;
    color: #495057;
    font-weight: 500;
    -webkit-transition: background 0.3s, box-shadow 0.3s;
    transition: background 0.3s, box-shadow 0.3s;
    border-radius: .375rem;
    text-decoration: none
}

.navigation .navigation-link:hover,
.navigation .navigation-link.active {
    color: #288cff
}

.scrollbar-inner {
    height: 100%
}

.scrollbar-inner>.scroll-element {
    transition: opacity 300ms;
    margin-right: 2px
}

.scrollbar-inner>.scroll-element.scroll-y {
    width: 3px;
    right: 0
}

.scrollbar-inner>.scroll-element.scroll-x {
    height: 3px;
    bottom: 0
}

.scrollbar-inner>.scroll-element .scroll-bar,
.scrollbar-inner>.scroll-element .scroll-element_track {
    transition: background-color 300ms
}

.scrollbar-inner>.scroll-element .scroll-element_track {
    background-color: transparent
}

.scrollbar-inner:not(:hover) .scroll-element {
    opacity: 0
}

.page-title {
    position: relative;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid #e9ecef
}

.page-title .heading {
    margin: 0;
    padding: 0;
    color: #212529
}

.page-title .heading a {
    color: #212529
}

@media (min-height: 600px) and (min-width: 767px) {
    .background-image-holder[data-holder-type="hero"] {
        height: 80vh
    }
}

.background-image-holder .holder-item {
    height: 100%;
    padding: 2rem 0
}

@media (max-width: 991px) {
    .background-image-holder .holder-item {
        height: auto;
        padding: 4rem 0
    }
}

.background-image-holder .swiper-container,
.background-image-holder .container {
    position: relative;
    height: 100%
}

.background-image-holder .swiper-container .swiper-slide .animated {
    opacity: 0
}

.background-image-holder .swiper-container .swiper-slide .animated.animation-ended {
    opacity: 1
}

.bg-cover {
    position: relative
}

.bg-size--cover {
    background-size: cover;
    background-repeat: no-repeat
}

.bg-size--contain {
    background-size: contain;
    background-repeat: no-repeat
}

.typeface-palette .typeface-entry {
    position: relative;
    display: block;
    padding: 2rem;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: .375rem
}

.typeface-badge {
    position: absolute;
    top: 10px;
    right: 10px
}

.color-palette .color-entry {
    position: relative;
    display: block;
    height: 170px;
    color: #FFF;
    border-radius: .375rem
}

.color-palette .color-entry .color-code {
    background: #fff;
    color: #495057;
    padding: 6px 10px;
    position: absolute;
    bottom: 12px;
    right: 12px
}

.content-docs h2[id]::before,
.content-docs h3[id]::before,
.content-docs h4[id]::before {
    content: "";
    display: block;
    height: 3rem;
    margin-top: -3rem
}

.content-docs h2[id]:not(:first-child),
.content-docs h3[id]:not(:first-child),
.content-docs h4[id]:not(:first-child) {
    margin-top: 5rem
}

.content-docs h2[id],
.content-docs h3[id],
.content-docs h4[id] {
    margin-bottom: 2rem
}

.highlight pre {
    padding: 1.5rem;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: .375rem
}

.code-example {
    margin: 2rem 0
}

.code-clipboard {
    position: relative
}

.btn-clipboard {
    position: absolute;
    top: .5rem;
    right: .5rem;
    z-index: 10;
    display: block;
    padding: .25rem .5rem;
    font-size: 75%;
    color: #818a91;
    cursor: pointer;
    background-color: transparent;
    border: 0;
    border-radius: .25rem
}

.btn-clipboard:hover {
    color: #fff;
    background-color: #027de7
}

.toc-entry {
    display: block
}

.toc-entry a {
    display: block;
    padding: .125rem 1.5rem;
    color: #99979c
}

.toc-entry a:hover {
    color: #007bff;
    text-decoration: none
}

.case{
    display:flex;
}