/*清除所有元素的边距和内边距*/
*{
    margin: 0;
    padding:0;
}

/*清除所有元素的默认样式 */
html, body, div, span, applet, object, iframe, h1,h2, h3,h4, h5,h6, p, blockquote, pre, a, abbr, acronym, address, big,
cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, d
d, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    vertical-align:baseline;
    background: transparent;
}

/* 清除列表默认样式*/
ul, ol {
    list-style: none;
}

/* 清除图片默认边框 */
img {
    border: none;
}

a {
    text-decoration: none;
}

/* 清除表格默认边框 */
table {
    border-collapse: collapse;
    border-spacing: 0;
}

html{
    background: white;
    font-family: Microsoft YaHei !important;
}
.mask_bg {
    display: none;
    width: 100%;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999999999;
}