.img-container {
    height: 100%;
    margin: 0 auto;
    position: absolute;
    text-align: center;
    width: 95%;
}

.img-container img {
    vertical-align: middle;
}

/* Reusable elements */

/* Header section of each page */
.header {
    padding-top: 42px;
    padding-bottom: 42px; 
    text-align: center;
}

.header-darkgray {
  /* Only using dark gray for documentation page, add padding top to center in header */
  background-color: #757575;
  color: white;
}

.header-grey {
  background-color: #fbfcfd;
}

.header-white {
  background-color: white;
}

/* Section elements */
/* Section classes used for particular sections within a page. Sections should differ in background color when used next to each other */
.section-white {
    background-color: white;
    padding: 56px 0;
}

.section-grey {
  background-color: #fbfcfd;
  padding: 56px 0;
}

/* Used to specifying when a section is at the top or bottom of the page to apply appropriate border */
.top-section-border {
    border-top: 1px solid #E0E0E0;
}

.bottom-section-border {
    border-bottom: 1px solid #E0E0E0;
}

.section-content {
    display: block;
    margin: 0 auto;
}

/* Icon above section header */
.section-icon {
    display: block;
    margin: 0 auto;
}

/* Header for each section */
.section-header {
    margin: 12px auto 8px;
    text-align: center;
}

/* Used for descriptions of sections underneath section headers*/
.support-paragraph {
    font-size: 15px;
    line-height: 1.5;
    margin-bottom: 16px;
    text-align: center;
}

/* Orange action button */
.orange-button {
    background-color: #E46E2E;
    border-radius: 2px;
    color: white;
    display: inline-block;
    font-size: 16px;
    padding: 13px 26px;
    text-align: center;
    text-decoration: none;
    margin: 0px 4px 0px 4px;
}

.orange-button:hover {
    background-color: #F27624;
    color: white;
    text-decoration: none;
}

.orange-button:active, .orange-button:focus {
    background-color: #DC601C;
    color: white;
    text-decoration: none;
}

/* Jupyter Notebook highlight section on front page */
.nb-highlight-text {
    margin-top: 100px;
}

.notebook-icon {
    height: auto;
    margin-right: 12px;
    width: 60px;
}

/* Give space between the notebook features (4 features) on front page and the     img + description */
.notebook-features {
    margin-top: 32px;
}

.notebook-features p{
    padding-top: 16px;
}

.nb-desc {
    font-weight: 200;
    line-height: 1.8;
    font-size: 14px;
    color: #4a5568;
    font-family: "微软雅黑";
}

/* Install prompt on front page */
.install-prompt {
    background-color: #f5f5f5;
    border-bottom-color: #e0e0e0;
    border-left-style: none;
    border-style: solid;
    border-top-color: #e0e0e0;
    border-width: thin;
    border-right: 0px;
    padding: 24px 0 42px 0;
    text-align: center;
}

.prompt-header {
    margin-bottom: 16px;
}

/* Companies section for only "Currently in use" (this section acts differently than customer logos in the "About" section of the site) */

/*Section-center is used to center the companies on the home page & get rid of padding on left associated with ul*/
.section-center {
    text-align: center;
}

.companies li {
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    display: inline-block;
    padding: 2% 4%;
    vertical-align: middle;
/*    width: 18%;*/
}

.companies .col img{
    display: block;
    width: 100%;
    max-height: 60px;
}

.greydout {
    -moz-opacity: .065;
    -webkit-opacity: 0.065;
    opacity: 0.65;
    -webkit-transition: all .5s ease;
    -moz-transition: all .5s ease;
    -ms-transition: all .5s ease;
    -o-transition: all .5s ease;
    transition: all .5s ease;
}

.greydout:hover {
    -webkit-opacity: 1;
    -moz-opacity: 1;
    opacity: 1;
}

/* JupyterHub section on front page */
/* Feature-middle is for the JupyterHub features that are in the middle that need to be offset to sit on the track */
.feature-middle {
    margin-top: 40px;
}

.hubfeature {
    text-align: center;
}

.hubfeature img {
    margin: 0 auto;
}

.hubfeatures {
    background: url("../assets/line.svg");
    background-position:  top center;
    background-repeat: no-repeat;
    /* Padding that is used to make the hubfeature circles sit on track */
    padding-top: 48px;
}

.arcfeature {
    background-color: white;
    border: 1px solid transparent;
    border-radius: 5px;
    height: 300px;
    margin: 0 auto;
    text-align: center;
    width: 330px;
}

.arcfeature .front img, .arcfeature .front2 img, .arcfeature .front3 img, .arcfeature .front4 img {
    margin-bottom: 0px;
    margin-top: 15px;
}

.arcfeature .back p {
    margin-top: 40px;
}

.arc-button {
    background-color: #8D8D8D;
    border-radius: 2px;
    color: white;
    font-size: 20px;
    padding: 8px 26px;
    text-decoration: none;
}

#arcfeature1 a:hover, #protocol a:hover, #kernel a:hover {
    background-color: #DB5106;
    box-shadow: 0 3px #863001;
}

.card {
    display: block;
    height: 100%;
    margin: 0 auto;
    text-align: center;
}
.bt, .bt1, .bt2 {
    cursor: default;
}

.card .front, .card .front2, .card .front3, .card .front4 {
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -o-backface-visibility: hidden;
    backface-visibility: hidden;
    height: 275px;
    position: absolute;
    text-align: center;
    -webkit-transition: -webkit-transform 0.3s linear 0s;
    transition: transform 0.3s linear 0s;
}

.flipped {
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
}

.content-back p{
    margin-bottom: 16px;
    margin-top: 10px;
}

.card .back{
    text-align: center;
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
}

.arcfeature a {
    color: white;
    text-decoration: none;
}

.arcfeature img {
    margin: 0 auto;
    padding-bottom: 5%;
    padding-top: 1%;
}

.arcfeature {
    display: inline-block;
}

#visualization svg{
    display: block;
    margin: 0 auto;
}

.council-member-photo {
    width: 200px;
    border-top-left-radius: 2px;
    border-top-right-radius: 2px;
    margin-top: 0px;
    margin-left: -15px;
}

.card-header {
    float:left;
    font-size: 16px;
    margin-top: 10px;
    text-align: left;
}

.card-info {
    float:left;
    font-size: 13px;
    margin-top: 0;
    text-align: left;
}

.card-link a {
    color: #F27624;
    float: left;
    font-size: 15px;
    line-height: 1;
    text-align: left;
    text-transform: uppercase;
}

.card-link a:hover {
    text-decoration: none;
}

@media (min-width: 1200px) {
  .section-white, .section-grey {
    padding: 5% 0;
  }
}

@media (max-width: 1200px) {
    .nb-highlight-text {
        margin-top: 70px !important;
    }
    .notebook-features .language-set h2{
        padding-top: 0;
    }
    .notebook-features #feature {
        padding-top: 4px;
    }
    .notebook-preview p {
        font-size: 15pt;
        line-height: 25pt;
    }
    .companies li{
        width:23%;
    }
}

/* Medium devices (desktops, 992px and up) */
@media (min-width: 992px) {
    p {
        font-size: 16px;
        font-weight: 400;
        line-height: 1.375;
    }
    
    footer p{
    	font-size: 18px;
    }
    h4 {
        font-size: 18px;
        font-weight: 500;
        line-height: 1.22;
    }
    h3 {
        font-size: 28px;
        font-weight: lighter;
        color: #4a5568;
        line-height: 1.8;
        font-family: '微软雅黑';
    }
    h2 {
        font-size: 36px;
        font-weight: 500;
        line-height: 1.25;
    }
    h1 {
        font-size: 48px;
        font-weight: 500;
        line-height: 1.05em;
    }
}

@media (max-width: 992px) {
    p {
        font-size: 16px;
        font-weight: 400;
        line-height: 1.25em;
    }
    h4 {
        font-size: 18px;
        font-weight: 500;
        line-height: 1.11em;
    }
    h3 {
        font-size: 22px;
        font-weight: lighter;
        color: #4a5568;
        line-height: 1.8;
        font-family: '微软雅黑';
    }
    h2 {
        font-size: 26px;
        font-weight: 500;
        line-height: 1.153em;
    }
    h1 {
        font-size: 32px;
        font-weight: 500;
        line-height: 1.25em;
    }
}

@media (max-width: 768px) {
    p {
        font-size: 16px;
        font-weight: 400;
        line-height: 1.25em;
    }
    h4 {
        font-size: 18px;
        font-weight: 500;
        line-height: 1.11em;
    }
    h3 {
        font-size: 22px;
        font-weight: lighter;
        line-height: 1.8em;
        color: #4a5568;
        font-family: '微软雅黑';
    }
    h2 {
        font-size: 26px;
        font-weight: 500;
        line-height: 1.153em;
    }
    h1 {
        font-size: 32px;
        font-weight: 500;
        line-height: 1.25em;
    }
    
	.nb-highlight-text {
	    margin-top: 30px !important;
	    text-align: center;
	}
}

@media (max-width: 330px) {
	.card .front, .card .front2, .card .front3, .card .front4{
		width: 230px;
	}
	
	footer .card .front, footer .card .front2, footer .card .front3, footer .card .front4{
		width: 250px;
	}
}