/*
Back to top button
*/
#back-top {
    margin:0;
    padding:0;
        position: fixed;
        right: 10px;
        bottom: 15px;
        margin-right: 100px;
        clear: both;
    display:block;

}
#back-top a {
    padding: 0;
    margin: 0;
    height: 40px;
    width: 100px;
    display: block;
    text-decoration: none;
    color: #bbb;
        /* background color transition */
        -webkit-transition: background-color .7s;
           -moz-transition: background-color .7s;
         -o-transition: background-color .7s;
            transition: background-color .7s;

}
#back-top a:focus {
    outline:none;
}
#back-top a:hover {
        color: #000;
}

#back-top a em {
    letter-spacing: 1px;
    line-height:40px;
    float: right;
/*    font-family: Arial, Helvetica, sans-serif; */
    font-size: 12px;
    padding-right: 5px;
    font-style: normal;
}

/* arrow icon (span tag) */
#back-top span {
    float:right;
        width: 40px;
        height: 40px;
        display: block;
        margin-bottom: 7px;
        background: #eee url(/images/button.png) no-repeat center center;
        /* rounded corners */
    -webkit-border-radius: 20px;
       -moz-border-radius: 20px;
            border-radius: 20px;
        /* background color transition */
         -webkit-transition: 1s;
            -moz-transition: 1s;
                 transition: 1s;
}
#back-top a:hover span {
    background-color: #ddd;
}