.pull-right {
    float: right;
}

.pull-left {
    float: left;
}

.clearfix {
    display: block;
}

.container {
    margin-left: auto;
    margin-right: auto;
}

.container-fluid {
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
}

.caret {
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #818081;
    border-top: 4px solid \9;
    display: inline-block;
    height: 0;
    margin-left: 2px;
    vertical-align: middle;
    width: 0;
}