body {
    color: #ffffff;
    width: 100%;
    /* font-family: 'Microsoft YaHei', sans-serif; */
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
        'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol',
        'Noto Color Emoji';
}

/* 消除图片间的白色间隙 */
img {
    display: block;
    vertical-align: middle;
    line-height: 0;
}

div {
    box-sizing: border-box;
}

/* header {
    background: rgba(115, 141, 135, 0);
    font: 1em Arial, sans-serif;
    height: 3rem;
    cursor: pointer;
} */

.d-none {
    display: none;
}


/* footer {
    color: #0c0c0c;
    font-size: 0.5rem;
    height: 3rem;
} */

.isMobile,
.isWeb {
    background: #ffffff;
    min-height: 100vh;
}

.container {
    margin: 0;
    padding: 0;
}


.d-flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

.align-items-center {
    align-items: center;
}

.align-items-start {
    align-items: start;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-start {
    justify-content: start;
}

.align-items-end {
    align-items: end;
}

.rounded-circle {
    border-radius: 50%;
}

.fw-bold {
    font-weight: 700;
}

.justify-content-end {
    justify-content: end;
}

.flex-1 {
    flex: 1;
    background-color: rgba(0, 0, 0, 0.1);
}

.p-relative {
    position: relative;
}

.p-absolute {
    position: absolute;
}

.p-full {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    padding: 0;
}

.p-fixed {
    position: fixed;
}

.footer {
    color: #0c0c0c;
    font-size: 0.5rem;
    padding: 0.5rem 0;
    font-weight: 200;
}

.nav-item-black {
    color: #0f0e0e;
}