.single-php {
    width: 66.5vw;
    min-width: 1080px;
    margin: 0 auto;
}

.post-title {
    letter-spacing:normal;
    font-size: 3rem;
    padding-bottom: 8px;
    padding-left: 25px;
    border-bottom: 2px dashed #fbe2e1;
    margin-bottom: 15px;
}

.post-date {
    text-align: right;
    font-size: 1.2rem;
    padding-right: 25px;
}
    
.post-content {
    margin-top: 50px;
    padding-bottom: 100px;
    border-bottom: 2px solid #fbe2e1;
    padding-left: 25px;
}

.post-content p {
    font-size: 1.7rem;
}

.page-nation {
    padding: 0 25px;
    margin-top: 80px;
}

.news_btn {
    display: flex;
}

.news_btn li {
    width: 33.3%;  
    display: flex
;
}

.news_btn li:first-child {
    justify-content: left;
}

.news_btn li:nth-child(2) {
    justify-content: center;
}

.news_btn li:last-child {
    justify-content: right;
}

@media screen and (min-width: 1080px) {
    .single-php {
        padding: 5.21% 0;
        box-sizing: border-box;
        padding-top: 12%;
    }
}

@media screen and (min-width: 768px) and (max-width: 1079px) {
    .single-php {
        width: 95%;
        min-width: auto;
        padding: 60px 0;
        box-sizing: border-box;
    }
}

@media screen and (max-width: 767px) {
    .single-php {
        width: 95%;
        min-width: auto;
        padding: 45px 0;
        box-sizing: border-box;
        flex-direction: column;
    }
}

@media screen and (min-width: 1080px) {
    .news_btn .next-yazi a:hover::before {
        color: #8a0021;
        right: -5px;
        transition: 0.2s;
    }

    .news_btn .prev-yazi a:hover::after {
        color: #8a0021;
        left: -5px;
        transition: 0.2s;
    }

}

@media screen and (min-width: 1080px) {
    .news_btn a:hover {
        color: #8a0021;
    }
}

@media screen and (min-width: 1080px) {
   .news_btn a {
        display: block;
        color: #474645;
        font-family: "Noto Sans JP", serif;
        font-size: 16px;
        font-weight: 400;
        letter-spacing: 0.1em;
        padding-right: 20px;
        padding-left: 20px;
        position: relative;
    }
}

@media screen and (min-width: 768px) and (max-width: 1079px) {
    .news_btn a:hover {
        color: #8a0021;
    }
}

@media screen and (min-width: 768px) and (max-width: 1079px) {
    .news_btn a {
        display: block;
        color: #474645;
        font-family: "Noto Sans JP", serif;
        font-size: 16px;
        font-weight: 400;
        letter-spacing: 0.1em;
        padding-right: 20px;
        padding-left: 20px;
        position: relative;
    }
}

@media screen and (min-width: 1080px) {
    .news_btn .next-yazi a::before {
        content: "\f061";
        color: #474645;
        font-family: "Font Awesome 5 Free";
        font-size: 13px;
        font-weight: bold;
        position: absolute;
        top: 30%;
        right: 0;
        transition: 0.2s;
    }

    .news_btn .prev-yazi a::after {
        content: "\f061";
        color: #474645;
        font-family: "Font Awesome 5 Free";
        font-size: 13px;
        font-weight: bold;
        position: absolute;
        top: 30%;
        left: 0;
        transform: rotate(180deg);
        transition: 0.2s;
    }
}


@media screen and (min-width: 768px) and (max-width: 1079px) {
    .news_btn .next-yazi a::before {
        content: "\f061";
        color: #474645;
        font-family: "Font Awesome 5 Free";
        font-size: 13px;
        font-weight: bold;
        position: absolute;
        top: 30%;
        right: 0;
        transition: 0.2s;
    }

    .news_btn .prev-yazi a::after {
        content: "\f061";
        color: #474645;
        font-family: "Font Awesome 5 Free";
        font-size: 13px;
        font-weight: bold;
        position: absolute;
        top: 30%;
        left: 0;
        transform: rotate(180deg);
        transition: 0.2s;
    }
}