html, body {
    display:flex;
    flex-direction: column;

    width: 100vw;
    height: 100vh;
    margin: 0;
}
main {
    display:flex;
    height: 80vh;
    width:100vw;
    margin: 0;
    background-color: beige;
}
.main_references {
    display: flex;
    justify-content: center;
    position: relative;
    height: 100%;
    width: 80%;
    margin: 0;
    padding: 0;
}
.main_picture {
    height: 80vh;
    width: 80vw;
    object-fit: contain;
    margin: 0;
}
.arrows {
    display: flex;
    align-items: center;
    justify-content: center;
    width:10vw;
    height: auto;
    margin: 0;
    padding: 0;
    background-color: beige;
}
#left_arrow {
    width: 25%;
}
#right_arrow {
    transform: rotate(0.5turn);
    width: 25%;
}

outer_container {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
 /*   width: 1200px;*/
    width:auto;
    height: 20vh;
    background-color: beige;
    padding: 0 0 0px 0; /*30px for the space of scrollbar*/
}

container {
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    align-items: center;
    overflow-x: auto;
 /*   width: 1200px;*/
    width:auto;
    height: 20vh;
    background-color: beige;

}

.thumbNails {
    display: flex;
    flex-direction: column;
    height: calc(20vh - 10px);
    padding: 0;
    margin: 0;
    position: relative;
}

@media only screen and (min-device-width: 600px) and (min-device-height: 600px) {
    .thumbNails {
        height: calc(20vh - 40px);
    };
}

.thumb_pictures {
    height: calc(100% - 15px);
    padding: 5px;
    border-radius: 10px;
    background-color: grey;
    box-shadow:  0 0 5px 0 grey;
    margin: 0px 2px;
}