#head {
    padding-top: 120px;
    padding-bottom: 20px;
    display: flex;
    justify-content: flex-start;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
}

#head::before {
    position: absolute;
    content: ' ';
    width: 100%;
    height: 100%;
    top: 0;
    bottom: 0;
    border-bottom: 1px solid var(--color-1);
    opacity: 0.4;
}

#head .mui-row {
    padding-top: 0.8em;
    padding-left: 2.8em;
    padding-right: 2em;
}

.contents-part {
    padding: 2.8em;
}

.contents-part ol>li {
    position: relative;
    margin: 0.2em;
    padding: 0.2em;
}

/*
.contents-part ol>li::before {
    position: absolute;
    content: ' ';
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    border-top: 1px solid var(--color-1);
    opacity: 0.2;
}*/

.contents-part ul li {
    border: none;
}


.contents-part a {
    position: relative;
}

.contents-part a::before {
    position: absolute;
    content: ' ';
    width: 0;
    height: 100%;
    top: 0;
    left: 0;
    margin: auto 49%;
    border-bottom: 1px solid var(--color-1);
    opacity: 0;
    transition: all 0.2s ease;
}

.contents-part a:hover::before {
    width: 100%;
    margin: 0;
    opacity: 1;
}

.contents-part>.mui-row {
    /*margin: 1.8em 2em;*/
}

.contents-part>.mui-row::before {
    position: absolute;
    content: ' ';
    width: 0;
    height: 100%;
    top: 0;
    left: 0;
    margin: auto 49%;
    border-bottom: 1px solid var(--color-1);
    opacity: 0;
    transition: all 0.2s ease;

}

.def-card {
    margin: 1.8em;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.8em;
    background-color: #ffffff;
    box-sizing: border-box;
    border-radius: 8px;
    box-shadow: 5px 5px 5px #10101038;
    overflow: hidden;
    max-width: 540px;
}

.def-card img {
    /*    border-radius: 160px;*/
    height: 180px;
    max-width: 180px;
    border-top-left-radius: 80px;
    border-bottom-left-radius: 80px;
    box-shadow: 0 0 4px 3px #000000 inset;
}


@media (max-width:767px) {
    .def-card {
        flex-direction: column;
        align-items: stretch;
        max-height: 800px;
        min-height: 80px;
    }

    .def-card img {
        /*    border-radius: 160px;*/
        border-top-left-radius: 80px;
        border-bottom-left-radius: 0px;
        border-top-right-radius: 80px;
        border-bottom-right-radius: 0px;
    }


}

.def-card>div {
    align-items: center;
    display: flex;
    justify-content: center;
    flex-direction: column;
}

.def-card>div:first-child {
    padding: 1.6em 1.2em;
    flex: 1;
}

#presentation>div:first-child {
    min-height: 250px;
    vertical-align: middle;
    padding-top: 3.2em;
}

#presentation p {
    line-height: 1.8em;
}

.list-table {
    display: flex;
    justify-content: flex-start;

}

.list-table>* {
    margin: 0.2em;
    padding: 1.2em;
    position: relative;
    flex: 1;
}

.list-table>li::after {
    position: absolute;
    left: 0;
    top: 50%;
    content: ' ';
    border-radius: 100%;
    height: 8px;
    width: 8px;
    transform: translateY(-50%);
    background-color: var(--color-1);
}

@media only screen and (max-width: 767px) {
    .list-table {
        display: flex;
        justify-content: flex-start;
        align-items: stretch;
        flex-direction: column;
    }
}