@charset "utf-8";
#main_page #contents .project_txt {
    float: left;
    max-width: 70%;
    text-align: justify;
}

#main_page #contents .elements {
    margin-top: 11px;
    margin-right: auto;
    margin-left: auto;
    margin-bottom: 5px;
}
#contents .elements .images {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    float: left;
    width: 30%;
}
.elements .images img {
    margin-top: 30%;
    /* [disabled]margin-bottom: auto; */
    align-self: center;
    display: block;
}


.elements .project_txt ul {
    margin-top: 15px;
    margin-right: auto;
    margin-left: 26px;
    margin-bottom: 15px;
}
#contents .project_txt p {
    margin-bottom: 6px;
    margin-top: 6px;
}
.elements .images #image_group1 {
}
.elements .images #img6 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.elements .images #img7 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.elements .images #img8 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group1 #img9 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group1 #img10 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group1 #img11 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group1 #img12 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group2 #img15 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group2 #img16 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group2 #img17 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group3 #img18 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group3 #img19 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.images #image_group3 #img20 {
    margin-top: 10px;
    margin-left: auto;
    margin-right: auto;
}
.hover{
    cursor: pointer;
}
#contents p #btn_tutorial {
    border-radius: 5px;
    background-color: #1F6ECC;
    border-color: #122C6A;
    padding: 5px;
    color: #fff;
    font-size: large;
}
#contents p #btn_tutorial_en {
    border-radius: 5px;
    background-color: #1F6ECC;
    border-color: #122C6A;
    padding: 5px;
    color: #fff;
    font-size: large;
}
@media (max-width:768px){
   #contents .elements .images {
    display:block;
    width: 100%;
       margin-top:0px;
       
       
} 
    .elements .images img {
    margin-top: 0%;
    /* [disabled]margin-bottom: auto; */
    align-self:center;
    display: block;
}
    .elements .images #img6 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .elements .images #img7 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .elements .images #img8 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .images #image_group1{
        display: flex;
        flex-direction: column;
    }
    .images #image_group1 #img9 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .images #image_group1 #img10 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .images #image_group1 #img11 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .images #image_group1 #img12 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .images #image_group2 #img15 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .images #image_group2 #img16 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
   .images #image_group2 #img17 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    .images #image_group3 #img18 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
   .images #image_group3 #img19 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
   .images #image_group3 #img20 {
    margin-top: 5px;
    margin-left: 0px;
    margin-right: 0px;
}
    #main_page #contents #blank_position {
    height: 250px;
}
    #main_page #contents .project_txt {
    margin-left: 5px;
    margin-right: 5px;
    max-width: 100%;

}
}