h1 {
    margin: 20px 20px 10px 20px;
    font-family: 'Lato', sans-serif;
    font-weight: 900;
}
body {
    margin: 0;
}

#main-heading {
    font-family: 'Lato', sans-serif;
    text-align: center;
    font-size: 200%;

}

#main-header {
    font-family: 'Lato', sans-serif;
    text-align: center;
    width:100%;
    height: 30px;
    color: #b0b0b0;
    margin-top:20px;
}

footer {
    font-family: 'Lato', sans-serif;
    text-align: center;
    width:100%;
    height: 30px;
    padding-top: 5px;
    background-color: #f9f9e6;
    color: #b0b0b0;
}

h3 {
    margin: 0px 20px;
    font-family: 'Lato', sans-serif;
    font-weight: 300;
}

article header p {
    font-family: 'Lato', sans-serif;
    margin: 10px 20px 10px 20px;
}

@media (min-width: 80em) {
    article header p {
        font-size: 120%;
    }
    article {
        margin: 10px auto 0px auto;
    }
    h1 {
        font-size: 150%;
    }
    h3 {
        font-size: 130%;
    }



.detail-list {
    display: grid;
    grid-template-columns: 50% 50%;
    grid-template-rows: 15em 15em;
    padding: 0px;
    margin: 0px auto 10px auto;
    min-width:60em;
    max-width:80em;
    column-count: 2;
    column-gap: 0px;
}

.detail-list li {
    position: relative;
    font-family: 'Lato', sans-serif;
    font-weight: 400;
    box-sizing: border-box;
    list-style: none;
}

.one, .four {
    background-color: lightgrey;
}
.two, .three {
    background-color: darkgrey;
}


}

@media (orientation: portrait) {
    article header p {
        font-size: 60% !important;
    }
    .detail-description {
        font-size: 80% !important;
    }

}


@media (max-width: 80em) {
    article header p {
        font-size: 90%;
    }
    article {
        margin: 10px 10px;
    }
    h1 {
        font-size: 130%;
    }
    h3 {
        font-size: 90%;
    }

.detail-list {
    display: grid;
    grid-template-columns: 100%;
    grid-template-rows: 15em 15em 15em 15em;
    padding: 0px;
    margin: 0px auto 10px auto;
    min-width:60em;
    max-width:80em;
    column-count: 2;
    column-gap: 0px;
}

.detail-list li {
    position: relative;
    font-family: 'Lato', sans-serif;
    font-weight: 400;
    box-sizing: border-box;
    list-style: none;
}



.one, .three {
    background-color: lightgrey;
}
.two, .four {
    background-color: darkgrey;
}

}

article {
    position: relative;
    min-width:60em;
    max-width:80em;
}

img {
    width:100%;
}

article ul {
    margin: 0px;
    padding: 0px;

}
article ul li {
    list-style: none;
    display:inline-block;

}

article ul li:not(:first-child) {
    position: absolute;
    top: 0px;
    left: 0px;
    
    animation-duration: 20s;
    animation-delay: 4s;
    animation-name: changeopacity;
    animation-timing-function: ease-in-out;
    
    animation-iteration-count: infinite;
    
}

.detail-description {
    height: 100%;
    padding: 10px;
    font-size: 90%;

}
.detail-list li img {
    height: 15em;
    width: auto;
    margin-left: 10px;
    float: right;
}

.detail-list li video {
    height: 15em;
    margin-left: 10px;
    float: right;


}




article ul li:first-child {
}

@keyframes changeopacity {
  0% {
    opacity: 1.0;
  }

  10% {
    opacity: 0.0;
  }
  50% {
    opacity: 0.0;
  }
  60% {
    opacity: 1.0;
  }
}

img {
    display: block;
}



article header {
    position: absolute;
    z-index: 2;
    background-color: white;
    left:
    0px;
    top: 0px;
    height: 100%;
    width: 33%;
    opacity: 0.85;
}