body {
    background-image: url(https://imgapi.cn/api.php?zd=zsy&fl=meizi&gs=images);
    background-size: cover;
    background-position: center top;
    min-height: 100vh;
    margin: 0;
    padding-bottom: 30px;
}

h1 {
    text-align: center;
    font-family: Microsoft YaHei;
}

h3 {
    text-align: center;
    font-family: Microsoft YaHei;
}



.form-posation {
    width: min(450px, calc(100% - 24px));
    height: auto;
    margin: 100px auto 50px;
    border-radius: 5px;
    padding: 12px 0 18px;
    background-color:rgba(255,255,255,0.5);
    text-align: center;
}



.form-username {
    width: 300px;
    height: 30px;
    font-size: 18px;
    line-height: 30px;
    padding: 0 5px;
    border: 1px solid #ff0000;
    /* diskplay:block转成块级元素 */
    display: block;
    margin: 50px auto;
}


.form-pwd {
    width: calc(100% - 60px);
    max-width: 360px;
    height: 30px;
    font-size: 18px;
    line-height: 30px;
    padding: 0 5px;
    border: 1px solid #ff0000;
    display: block;
    margin: 42px auto 16px;
}

.form-login {
    background: rgb(180, 50, 9);
    border: none;
    border-radius: 15px;
    padding: 10px 50px;
    font-size: 20px;
    color: #ffffff;
    display: block;
    margin: 16px auto 8px;
}

.parse-result {
    width: calc(100% - 36px);
    margin: 0 auto 14px;
    overflow-wrap: break-word;
    word-break: break-word;
}

.parse-result h3 {
    margin: 12px auto;
    line-height: 1.45;
}

.parse-result p {
    margin: 12px auto;
    line-height: 1.6;
}

.ad-slot {
    width: calc(100% - 40px);
    min-height: 90px;
    margin: 8px auto 8px;
    overflow: hidden;
    text-align: center;
}

.ad-slot ins {
    max-width: 100%;
}



.beian {
    text-align: center;
    margin: 0 auto 10px;
}

@media (max-width: 520px) {
    .form-posation {
        margin-top: 70px;
    }

    .form-pwd {
        width: calc(100% - 40px);
    }
}