.sec-cat{
    padding-top: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.sec-cat-header{
    width: 100%;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.sec-cat-ttl{
    text-align: center;
    font-size: 3rem;
    margin-bottom: 0;
}

.sec-cat-list{
    width: 60vw;
    margin: 0 auto;
}


.sec-cat-list p{
    font-size: 1.2rem;
    font-weight: bold;
    color: #4b4b4b;
    text-align: center;
}

.sec-cat-list div{
    display:flex;
	justify-content: left;
    align-items: center;
    flex-wrap: wrap;
}

.sec-cat-name.active-cat{
    border: solid 1px #ff3e3e;
    color: #ff3e3e;
}

.sec-cat-name{
    border: solid 1px #4b4b4b;
    color: #4b4b4b;
    font-weight: bold;
    border-radius: 5px;
    padding: 10px 20px;
    margin: 5px;
}

.sec-cat-name:hover{
    border: solid 1px #ff3e3e;
    color: #fff;
    background-color: #ff3e3e;
    font-weight: bold;
    border-radius: 5px;
    padding: 10px 20px;
    margin: 5px;
}

.sec-item-list{
	display:flex;
	justify-content: center;
    flex-wrap: wrap;
}

.item_list{
	display:flex;
	justify-content: center;
    flex-wrap: wrap;
}

.sec-item{
    width: 384px;
    margin: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background-color: #fcfcfc;
    box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
    border-radius: 10px;
}

.sec-item-img{
    width: 384px;
    height: 216px;
    display: flex;
    justify-content: center;
    overflow: hidden;
    border-radius: 10px;
}

.sec-item-img > img{
    width: 384px;
    height: 216px;
    object-fit: cover;
    border-radius: 10px;
}


.sec-item-cat ,.post-cat{
    height: 30px;
    display:flex;
    align-items: center;
    margin-top: 20px;
    padding-left: 10px;
}

.sec-item-cat p ,.post-cat p{
    background-color: #646464;
    border-radius: 5px;
    color: #fff;
    padding: 3px;
    font-weight: bold;
    font-size: 0.8rem;
}

.sec-item-ttl{
    height: 100px;
    display:flex;
    flex-wrap: wrap;
    font-weight: bold;
    padding: 0 20px;
    text-align: left;
}

/* 記事 */

#toc_container {
        margin: 30px auto;
}


.post-ttl{
    text-align: center;
}

.post-txt{
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    padding-bottom: 50px;
    line-height: 40px;
}

.post-txt-inner iframe{
    margin: 0 auto;
}

.post-txt-inner > iframe, .post-txt-inner > div > figure{
    display: block;
    margin: 0 auto;
    box-shadow: 0px 3px 3px 1px rgb(112, 112, 112);

}

.post-txt-inner td {
    width: 100px;
}

.post-txt-inner a{
    border-bottom: 1px solid #000;
}

.post-txt-inner h2{
    border-left: solid 5px #ff3e3e;
    font-size : 1.9rem;
    padding : 10px 15px;
    margin:  15px 0;
}

.post-txt-inner h3{
    border-bottom: solid 3px #ff3e3e;
    font-size : 1.5rem;
    padding : 10px 0px;
    margin: 50px 0;
}

.post-sec{
    margin: 50px 0 ;
}


/* pc */
@media screen and (min-width: 1000px) {
    .post-content{
        width: 70vw;
    }

    .post-txt-inner{
        width: 60vw;
    }
}

/* tab */
@media screen and (min-width: 481px) and (max-width: 999px) {
    .post-content{
        width: 80vw;
    }

    .post-txt-inner{
        width: 80vw;
    }

    .post-txt-inner iframe{
        width: 55vw;
        height: 300px;
    }

}


/* smartPhone */
@media screen and (max-width: 480px) {
    .post-content{
        width: 95vw;
    }

    .post-txt-inner{
    width: 90vw;
}

    .post-txt-inner iframe{
        width: 55vw;
        height: 300px;
    }

}