body {
    margin: 0;
}

.head_photo_cover {
    position: relative;
    width: 100%;
    height: 30vw;
}

.head_photo {
    position: absolute;
    width: 100%;
    top: 50%;
    transform: translateY(-50%);
}

.head_title {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: 3vw;
    font-size: 5vw;
    font-weight: 600;
    color: #ffffff;
    letter-spacing: 1vw;
    animation: fadeInLeftTitle 1s ease-in-out;
}

.head_title_en {
    position: absolute;
    bottom: 0;
    text-wrap: nowrap;
    font-size: 3vw;
    letter-spacing: 0;
}

.content {
    position: relative;
    box-shadow: 0 -40px 80px #090909;
    width: 100%;
    overflow: hidden;
    background: url(/static/img/texture.png) repeat;
    animation: fadeInContent 1s ease-in-out;
}

.breadcrumb_navigation {
    position: relative;
    width: 80%;
    left: 10%;
    height: 60px;
    animation: fadeInLeft 1s ease-in-out;
}

.svg_location {
    position: absolute;
    height: 27px;
    top: 50%;
    transform: translateY(-50%);
}

.current {
    position: relative;
    padding-left: 30px;
    top: calc(50% - 11px);
    font-size: 14px;
    color: #6d6d6d;
}

.breadcrumb_item {
    position: relative;
    top: calc(50% - 11px);
    font-size: 14px;
    color: #6d6d6d;
    text-decoration: none;
}

.breadcrumb_item:hover {
    color: #903612;
}

.next {
    position: relative;
    top: calc(50% - 11px);
    font-size: 16px;
    color: #6d6d6d;
}
.content_title {
    position: relative;
    font-size: 30px;
    color: #090909;
    letter-spacing: 1px;
}

.content_inner {
    position: relative;
    width: 80%;
    left: 10%;
    animation: fadeInBottom 1s ease-in-out;
    transition-duration: 200ms;
}

.content_subtitle {
    position: relative;
    left: 140px;
    top: -23px;
    font-size: 16px;
    color: #9d9d9d;
}

.split_content {
    position: relative;
    top: -14px;
    width: 100%;
    height: 1px;
    background-color: #c3c3c3;
}

.content_abstract {
    position: relative;
    color: #9d9d9d;
    width: calc(100% - 40px);
    left: 20px;
    font-size: 14px;
    line-height: 28px;
    text-indent: 30px;
    letter-spacing: 1px;
}

.thesis_list {
    position: relative;
    width: 100%;
}

.thesis_item {
    position: relative;
    left: 20px;
    padding: 5px 0;
    width: calc(100% - 40px);
}

.thesis_item_content {
    font-size: 14px;
    letter-spacing: 1px;
    line-height: 36px;
    color: #090909;
}

.thesis_item_number {
    position: absolute;
    top: 50%;
    color: #6d6d6d;
    transform: translateY(-50%);
}

.thesis_item_title {
    position: relative;
    display: block;
    left: 30px;
    text-decoration: none;
    width: calc(100% - 150px);
    transition-duration: 200ms;
}

.thesis_item_title:hover {
    transition-duration: 200ms;
    transform: translateX(5px);
    color: #903612;
}

.thesis_item_date {
    position: absolute;
    display: none;
    color: #903612;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    transition-duration: 200ms;
}

.thesis_item_title:hover + .thesis_item_date {
    display: block;
    transition-duration: 200ms;
}

.split_thesis {
    position: absolute;
    width: 102%;
    left: 50%;
    transform: translateX(-50%);
    height: 1px;
    background-color: #c3c3c3;
}

@media screen and (max-width: 681px) {
    .content_inner {
        width: 98%;
        left: 1%;
    }
}

@keyframes fadeInLeft {
    from {
        transform: translateX(-4vw);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeInLeftTitle {
    from {
        transform: translate(-4vw, -50%);
        opacity: 0;
    }
    to {
        transform: translateY(-50%);
        opacity: 1;
    }
}

@keyframes fadeInBottom {
    from {
        transform: translateY(4vh);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeInContent {
    from {
        transform: translateY(4vh);
    }
    to {
        transform: translateY(0);
    }
}