#acc #subject-link .acc-content span a,
#acc #class-link .acc-content span a
{
    float:left;
    width: 22.5%;
    height: 200px;
    text-align: center;
    padding: 25px 5px 0 5px;
    margin: 2.5px;
    border: solid 1px #C0C0C0;
    transition: background-color 0.5s;
}

@media screen and (max-width:1300px) {

    #acc #subject-link .acc-content span a,
    #acc #class-link .acc-content span a
    {
        width: 30.3%;
        font-size: 90%;
    }
}

@media screen and (max-width:768px) {

    #acc #subject-link .acc-content span a,
    #acc #class-link .acc-content span a
    {
        font-size: 80%;
    }
}

#acc #subject-link .acc-content span a:hover,
#acc #class-link .acc-content span a:hover {
    border: solid 1px #000;
}

#subject-link img,
#class-link img {
    width: auto;
    height: 125px;
    display: block;
    margin: 0 auto;
}

#subject,
#class {
    display: none;
    background-color: #F1F3F4;
    text-align: center;
    opacity: 0;
    transition: opacity 2s;
    padding-bottom: 10px;
}

#subject .close-icon,
#class .close-icon {
    color: #808080;
    display: block;
    padding: 7.5px 0;
    width: 50%;
    margin: 7.5px auto !important;
    transition: background-color 0.5s;
}

#subject .close-icon:hover,
#class .close-icon{
    color: #fff;
}

#populate-subject,
populate-class {
    width: 90%;
    margin: 0 auto;
}

#populate-subject img:first-of-type,
#populate-class img:first-of-type{ /* awards and class image */
    width: 50%;
    height: auto;
}

#populate-subject a img,
#populate-class a img{
    width: 128px;
    height: 128px;
}

#populate-subject a {
    display: inline-block;
    width: 20%;
    height: auto;
    padding: 5px 0;
    margin: 5px;
    vertical-align: text-top;
}

#populate-class a {
    display:block;
    width:75%;
    padding: 5px 0;
    margin: 5px auto !important;
}

/* #populate-subject a:hover {
    -ms-transform: scale(1.2);*/ /* ie 9 */
    /*-webkit-transform: scale(1.3);*/ /* safari 3-8 */
    /*transform: scale(1.2);
} */

#subject h2, #subject h5,
#class h2, #class h5 {
    color: #fff;
    background-color: #808080;
    padding: 7.5px 0;
    margin: 15px 0;
}

/* sub-subjects */

.heading {
    cursor: pointer;
    padding: 20px;
    margin-top: 10px;
}

.heading:nth-of-type(odd) {
    background-color: #ADD8E6;
    border-left: 15px solid #28377D;
}

.summary {
    height: 0;
    overflow: hidden;
    --timer: 0.5s;
    transition: var(--timer) linear height;
}

.summary.active {
    height: var(--height); /* get value from js */
}