.b {
    font-weight: bold;
}

.btn-box {
    cursor: pointer;
}

.cb, .clear {
    clear: both;
}

.cl {
    clear: left;
}

.cr {
    clear: right;
}

.db {
    display: block;
}

.df {
    display: flex;
}

.l, .left {
    float: left;
}

.r, .right {
    float: right;
}

.right, .r {
    float: right;
}

.top {
    vertical-align: top;
}

.c, .center {
    margin: 0 auto;
}

.top {
    vertical-align: top;
}

.t-left {
    text-align: left;
}

.t-right {
    text-align: right;
}

.t-center, .tc {
    text-align: center;
}

.disabled {
    cursor: default;
}

.h {
    display: none !important;
    visibility: hidden;
}

.invisible {
    visibility: hidden;
}

.ir {
    display: block;
    border: 0;
    text-indent: -999em;
    overflow: hidden;
    background-color: transparent;
    background-repeat: no-repeat;
    text-align: left;
    direction: ltr;
}

.ir br {
    display: none;
}

.bn {
    border: none;
}

.mt {
    margin-top: 10px;
}

.mb {
    margin-bottom: 10px;
}

.ml {
    margin-left: 10px;
}

.mr {
    margin-right: 10px;
}

.mt2 {
    margin-top: 20px;
}

.mb2 {
    margin-bottom: 20px;
}

.ml2 {
    margin-left: 20px;
}

.mr2 {
    margin-right: 20px;
}

.nm {
    margin: 0;
}

.pa {
    position: absolute;
}

.pr {
    position: relative;
}