html, body {
    margin: 0;
    height: 100%;
    color: #fff;
    font-family: "ff-tisa-web-pro-1", "ff-tisa-web-pro-2", "Lucida Grande", "Hiragino Sans GB", "Hiragino Sans GB W3", "Microsoft YaHei", "WenQuanYi Micro Hei";
}

h1, .img_hint {
    display: none;
}

a {
    text-decoration: none;
    color: #010101;
    z-index: 1;
}

.nav {
    top: 1%;
    font-size: 16px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.nav_left {
    margin-top: 1%;
    width: 200px;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-around;
    align-items: center;
}

.nav_right {
    margin-top: 1%;
    width: 400px;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-around;
    align-items: center;
}

.btn {
    background-color: #fff;
    width: 80px;
    font-size: 16px;
    line-height: 31px;
    border-radius: 24px;
    height: 32px;
    text-align: center;
}

.btn a {
    color: #010101;
    z-index: 1;
}

.img_body {
    width: 100%;
    height: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    margin: 0;
    background-position: center center;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-content: space-between;
}

.footer {
    display: flex;
    background-color: rgba(0, 0, 0, 0.5);
    height: 50px;
    font-size: 16px;
    height: fit-content;
    padding: 10px 10px 6px 10px;
    ; }

.footer img {
    width: 12px;
}

.img_body {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
}

pre {
    font-family: inherit;
    white-space: pre-line;
    margin: 2px 0 0 0;
    font-size: 12px;
}