.post {
    padding-top: 180px;
    padding-bottom: 60px;
    margin-top: -120px;
}
.post .m-ttl {
    text-align: center;
    margin-bottom: 50px;
}
.post .m-ttl h2 {
    color: #151A8C;
    font-size: 3.6rem;
    line-height: 1.5;
    margin-bottom: 20px;
}
.post .m-ttl p {
    color: #151A8C;
    font-weight: bold;
}
.post .block {
    width: 85%;
    max-width: 1200px;
    margin: auto;
}
.post .block .item {
    display: block;
    position: relative;
    width: 30%;
    margin-right: 5%;
    margin-bottom: 50px;
}
.post .block .item.limit:nth-child(4) {
    display: none;
}
.post .block .item:nth-child(3n) {
    margin-right: 0;
}
.post .block .item .thumbnail {
    position: relative;
    margin-bottom: 20px;
}
.post .block .item .thumbnail a {
    background: none;
    padding: 0;
}
.post .block .item img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
.post .block .item .thumbnail .new {
    position: absolute;
    padding: 3px 20px;
    color: #fff;
    color: #151A8C;
    background-color: #FFE356;
    font-weight: bold;
    left: 0;
    top: 0;
}
.post .block .item .tag {
    margin-bottom: 20px;
}
.post .block .item .tag ul {
    display: flex;
    flex-wrap: wrap;
}
.post .block .item .tag li {
    background-color: #151A8C;
    color: #fff;
    text-align: center;
    padding: 5px 10px;
    font-size: 1.2rem;
    margin-bottom: 5px;
    margin-right: 5px;
}
.post .block .item .tag li a {
    padding: 0;
}
.post .block .item .tag .date {
    font-weight: bold;
    color: #333;
}
.post .block .item .ttl,
.post .block .item .ttl a {
    color: #151A8C;
    text-decoration: underline;
    font-size: 2.0rem;
    line-height: 1.6;
    font-weight: bold;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    margin-bottom: 0;
    border-radius: 0;
    background: none;
    text-align: left;
    padding: 0;
}
.post .block .item a {
    display: block;
    width: 100%;
    text-align: center;
    color: #fff;
    background-color: #151A8C;
    border-radius: 30px;
    padding: 10px 0;
}
.post .block .nav input {
    width: 480px;
    margin: auto;
    padding: 10px 0;
    font-size: 2.0rem;
    position: relative;
    display: block;
    border: #151A8C 1px solid;
    color: #151A8C;
    font-weight: bold;
    text-align: center;
    box-shadow: 5px 5px 0px 0px #151A8C;
    background-color: #fff;
    cursor: pointer;
}
.post .block .back a {
    border: none;
    display: block;
    width: 480px;
    margin: auto;
    border-radius: 30px;
    background-color: #555555;
    color: #fff;
    padding: 10px 0;
    text-align: center;
    font-weight: bold;
    font-size: 2.0rem;
}
.post .block .create_event a {
    border: none;
    display: block;
    width: 480px;
    margin: auto;
    border-radius: 30px;
    background-color: #151A8C;
    color: #fff;
    padding: 10px 0;
    text-align: center;
    font-weight: bold;
    font-size: 2.0rem;
}

@media screen and (max-width: 768px) {
    .post {
        padding-bottom: 0;
        padding-top: 180px;
        margin-top: -120px;
    }
    .post.news {
        padding-bottom: 10px;
    }
    .post .m-ttl h2 {
        font-size: 2.2rem;
        margin-bottom: 5px;
    }
    .post .block .item {
        width: 47%;
        margin-right: 6%;
        margin-bottom: 40px;
    }
    .post .block .item:nth-child(4) {
        display: block;
    }
    .post .block .item:nth-child(3n) {
        margin-right: 6%;
    }
    .post .block .item:nth-child(2n) {
        margin-right: 0;
    }
    .post .block .item .tag {
        margin-bottom: 10px;
    }
    .post .block .item .tag li {
        padding: 5px 10px;
        font-size: 1.0rem;
    }
    .post .block .item .tag .date {
        font-size: 1.4rem;
    }
    .post .block .item .ttl {
        margin-bottom: 15px;
        line-height: 1.4;
        -webkit-line-clamp: 3;
        font-size: 1.5rem;
    }
    .post .block .item .date {
        font-weight: bold;
        color: #333;
        font-size: 1.2rem;
    }
    .post .nav_link a {
        width: 284px;
        font-size: 1.5rem;
        padding: 10px 0;
    }
    .post .block .nav input {
        width: 100%;
        font-size: 1.6rem;
    }
    .post .block .back {
        padding-bottom: 40px;
    }
    .post .block .back a {
        width: 90%;
    }
}