/*父级水平垂直居中样式*/
.rcb-lw-horizontal-and-vertical-center-for-parent{
    /* flex布局 */
    display: flex;
    /* 使子项目水平居中 */
    justify-content: center;
    /* 使子项目垂直居中 */
    align-items: center;
}
/*水平居中样式*/
.rcb-lw-horizontal-center-have-width{
    margin: 0 auto;
}
/*水平居中样式（子集没有宽度的父级样式）*/
.rcb-lw-horizontal-center-child-have-not-width-for-parent{
    text-align: center;
}
/*水平居中样式（子集没有宽度的子集样式）*/
.rcb-lw-horizontal-center-child-have-not-width{
    display: inline-block;
}
/*垂直居中样式（子集没有宽度的父级样式）*/
.rcb-lw-vertical-center-child-have-not-width-for-parent{
    position: relative;
}
/*垂直居中样式（子集没有宽度的子级样式）*/
.rcb-lw-vertical-center-child-have-not-width{
    position: relative;
}
/*垂直居中样式（子集没有宽度的父级样式，flex模式）*/
.rcb-lw-vertical-center-child-have-not-width-for-parent-flex{
    display: flex;
    /* 垂直居中 */
    align-items: center;
}
/*所有的子元素居中显示*/
.rcb-lw-children-center{
    display: flex;
    justify-content: space-between;
    flex-direction: column;
    align-items: center;
    padding: auto 0;
}
/*悬浮固定位置显示*/
.rcb-lw-suspension-fixed{
    position: fixed;
    right: 0;
    top: 40%;
    z-index: 2000;
}