.presentation{
    height: 100%;
    overflow: auto;
}
.page-content h1 {
    color: #082e63;
}
.title_cite{
    color: #7d6b6b;
}
.page-content {
    padding: 1em 2em;
    background-color: white;
}
* {
    box-sizing: border-box;
}
dfn, .feature-copy cite{
    display: block;
    margin-bottom: 1em;
}
.feature-copy{
    text-align: justify;
    padding-right: 2em;
}
.feature-copy h2{
    font-weight:bold ;
}
.feature-copy cite{
    color: #7d6b6b;
}
@media (min-width: 1260px) {
    .feature {
        overflow: hidden;
        clip-path: polygon(100% 0, 100% 100%, 0 100%, 0 0);
    }
}
.feature:nth-child(odd) {
    background-color: white;
}
.feature:nth-child(odd) img  {
    border-radius: 0.5em;
    box-shadow: 5px 5px 20px #171717;
}
.feature:nth-child(even) img  {
    border-radius: 0.5em;
}
.feature:nth-child(even), .feature:nth-child(even) .feature-copy h2, .feature:nth-child(even) .feature-copy cite {
    background-color: #171717;
    color: white;
}
.feature:nth-child(even) .feature-copy dfn, .feature:nth-child(odd) {
    text-align: left;
}
dfn, .feature:nth-child(even), .feature:nth-child(even) .feature-copy h2, .feature:nth-child(even) .feature-copy cite{
    text-align: right;
}

@media (min-width: 1260px) {
    .feature:nth-child(odd) .feature-inner {
        flex-direction: row-reverse;
    }
    .feature:nth-child(odd) .feature-image-container {
        margin-right: 4rem;
        transform: translateX(-2rem);
    }
    .feature:nth-child(odd).show-feature .feature-image-container {
        transform: translateX(0%);
    }
}
@media (min-width: 1260px) {
    .feature:nth-child(even) .feature-inner {
        flex-direction: row;
    }
    .feature:nth-child(even) .feature-image-container {
        margin-left: 4rem;
        transform: translateX(2rem);
    }
    .feature:nth-child(even).show-feature .feature-image-container {
        transform: translateX(0%);
    }
}
.feature-inner {
    display: flex;
    flex-direction: column-reverse;
    padding: 2rem;
    width: 100%;
}
@media (min-width: 1260px) {
    .feature-inner {
        align-items: center;
        justify-content: center;
        top: 0;
        left: 0;
        right: 0;
        margin: auto;
    }
}
.feature-inner > * {
    flex: 0 1 50%;
}
.feature-image-container {
    position: relative;
    margin-top: 2rem;
    opacity: 0;
    transition: opacity 0.5s, transform 0.5s;
}
.feature-image-container .feature-image {
    max-height: 70vh;
    max-width: 80vw;
}
.show-feature .feature-image-container {
    opacity: 1;
    display: flex;
    justify-content: center;
}
@media (min-width: 1260px) {
    .feature-image-container {
        margin-top: 0;
        max-width: 70vmin;
    }
}
.feature-image-container .feature-image {
    position: relative;
    width: 100%;
    vertical-align: bottom;
    z-index: 2;
}
.feature-copy {
    position: relative;
    z-index: 2;
    opacity: 0;
    transform: translateY(2rem);
    transition: opacity 0.5s, transform 0.5s;
}
.show-feature .feature-copy {
    opacity: 1;
    transform: translateY(0);
}
@media (max-height: 416px){
    .feature-copy {
        padding-right: 0;
    }
    .feature-copy ol{
        padding: 1em;
    }
    .feature-copy, .feature-image-container{
        opacity: 1;
    }
}
@media (min-width: 300px){
    .feature-copy {
        padding-right: 0;
    }
    .feature-copy ol{
        padding: 1em;
    }
    .feature-copy, .feature-image-container{
        opacity: 1;
    }
    .feature:nth-child(odd) img, .feature:nth-child(even) img   {
        margin-bottom: 1.5em;
    }
}