.fl {
    float: left;
}

.fr {
    float: right;
}

.clrfix {
    zoom: 1;
}

.clrfix:after {
    content: "";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
    overflow: hidden;
}

.button-doc-4 {
    padding: 10px 0;
}

ul li {
    margin-left: 10px;
}

.bg {
    background-color: rgb(190, 200, 200);
    padding: 10px 0 10px 0;
}