body {
    margin: 0px;
    width: 100%;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    overflow-x: hidden;
}

html,
body {
  overflow-x: hidden;
}

h1 {
    text-align: center;
    margin-top: 80px;
    font-size: 22px;
}

section.introduction .welcome1 {
    text-align: center;
    margin-top: -10px;
    font-size: 18px
}

section.introduction .welcome2 {
    text-align: center;
    margin-top: -10px;
    font-size: 18px;
}

section.introduction .pintro {
    width: max-800px;
    text-align: justify;
    margin-top: 50px;
    padding-left: 300px;
    padding-right: 300px;
    margin-bottom: 70px;
    line-height: 30px;
    font-size: 16px;
}

.projet1,
.project2,
.project3 {
    text-align: justify;
    line-height: 30px;
    font-size: 16px;
}

.filopodia img,
.orientation img {
    margin-left: 150px;
}

.odor img {
    margin-right: 150px;
}

h2 {
    text-align: center;
    font-size: 22px
}

#content {
    display: flex;
    align-items: center;
    margin-top: 70px;
    margin-bottom: 70px;
}

#description_filopodia {
    padding-left: 150px;
    padding-right: 150px;
}

#description_odor {
    padding-left: 150px;
}

#description_orientation {
    padding-right: 150px;
}

hr.separation1 {
    height: 3px;
    background-color: black;
    width: 400px;
}

hr.separation2 {
    height: 3px;
    background-color: black;
    width: 100%;
}

h3 {
    font-size: 20px;
    margin-left: 50px;
}

.container {
    margin-top: 0px;
    margin-bottom: 30px;
    width: 80%;
    margin-left: auto;
    margin-right: auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr); 
    gap: 20px;
    justify-items: center;
    align-items: center;
    box-sizing: border-box;
}

#item1 img { max-width: 100px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item2 img { max-width: 100px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item3 img { max-width: 150px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item4 img { max-width: 160px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item5 img { max-width: 140px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item6 img { max-width: 60px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item7 img { max-width: 110px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item8 img { max-width: 130px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item9 img { max-width: 90px; width: 100%;display:block; margin-left: auto;
    margin-right: auto; }
#item10 img { max-width: 110px; width: 100%;display:block; margin-left: auto;
    margin-right: auto; }
#item11 img { max-width: 90px; width: 100%; display:block; margin-left: auto;
    margin-right: auto;}
#item12 img { max-width: 90px; width: 100%;display:block; margin-left: auto;
    margin-right: auto; }


.click {
    text-decoration: none;
    color: rgb(156, 58, 58);
    font-weight: bold;
    font-size: 16px;

}

span.droso {
    font-style: italic;
    font-weight: bold;
}

span.bold {
    font-weight: bold;
}

span.droso2 {
    font-style: italic;
}


@media(max-width:1300px) {

    section.introduction .pintro {
        padding-left: 200px;
        padding-right: 200px;
    }

    .filopodia img {
        margin-left: 70px;
    }

    .odor img {
        margin-right: 70px;
    }

    .orientation img {
        margin-left: 70px;
    }

    #description_filopodia {
        padding-left: 70px;
        padding-right: 70px;
    }

    #description_odor {
        padding-left: 70px;
    }

    #description_orientation {
        padding-right: 70px;
    }
}

@media(max-width:1024px) {


    section.introduction {
        background-color: rgba(222, 184, 135, 0.336);
        padding-top: 1px;
        padding-bottom: 20px;
    }

    section.introduction p.pintro {
        margin: 0;
        padding-left: 15px;
        padding-right: 15px;
        width: auto;
    }

    hr.separation1 {
        width: 0px;
    }

    section.filopodia div#content {
        flex-direction: column;
        margin-top: 60px;
        align-content: center;

        img.filopodia {
            margin: 0;
            width: 200px;
            height: auto;
        }

        div#description_filopodia {
            padding-left: 15px;
            padding-right: 15px;
        }
    }

    section.odor div#content {
        flex-direction: column-reverse;
        margin-top: -30px;

        img.odor {
            margin: 0;
            width: 200px;
            height: auto;
        }

        div#description_odor {
            padding-left: 15px;
            padding-right: 15px;
        }
    }

    section.orientation div#content {
        flex-direction: column;
        margin-top: -30px;

        img.orientation {
            margin: 0;
            width: 200px;
            height: auto;
        }

        div#description_orientation {
            padding-left: 15px;
            padding-right: 15px;
        }
    }

    h1,
    section.introduction .welcome1,
    section.introduction .welcome2,
    section.introduction .pintro {
        width: auto;
        margin-left: 15px;
        margin-right: 15px;
    }

    h3 {
        margin-left: 15px;
        margin-bottom : 0px;
    }

    .container {
        margin-top: 30px;
        margin-bottom: 30px;
        width:100%;
        margin-left: auto;
        margin-right: auto;
        display: grid;
        grid-template-columns: repeat(3, 1fr); 
        gap: 20px;
        justify-items: center;
        align-items: center;
        box-sizing: border-box;
    }

    h1 {
        margin-top: 30px;
        font-size: 20px;
    }
    
    section.introduction .welcome1 {
        margin-top: -10px;
        font-size: 20px
    }
    
    section.introduction .welcome2 {
        margin-top: -10px;
        font-size: 20px;
    }
    
    section.introduction .pintro {
        margin-top: 0px;
        padding-bottom: -20px;
        line-height: 20px;
        font-size: 16px;
    }
    
    .projet1,
    .project2,
    .project3 {
        text-align: justify;
        line-height: 20px;
        font-size: 16px;
    }
    h2 {
    
        font-size: 18px
    }
    h3 {
        font-size: 18px;
    }

    .click {
        font-size: 16px;
    }
    
  

    #item1 img { max-width: 65px; }
    #item2 img { max-width: 65px; }
    #item3 img { max-width: 65px; }
    #item4 img { max-width: 70px; }
    #item5 img { max-width: 60px; }
    #item6 img { max-width: 60px; }
    #item7 img { max-width: 65px; }
    #item8 img { max-width: 65px; }
    #item9 img { max-width: 65px; }
    #item10 img { max-width: 65px; }
    #item11 img { max-width: 65px; }
    #item12 img { max-width: 65px; }


    #content {
        display: flex;
        align-items: center;
        margin-top: 60px;
        margin-bottom: 60px;
    }

    section.introduction {
        margin-bottom: -40px;
    }

    hr.separation2 {
        margin-top: -40px;
    }
}