*{
    margin:0;
    padding:0;
}



#sernac body{
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    font-size: 16px;
    line-height: 1,5;
    letter-spacing: normal;
    background: #f8f8f8;
}

#sernac table, th, tr, td{
    border-collapse: collapse;
    border: 1px solid black;
    font-size: 12px;
}

#sernac div.all{
    width: 100%;
    padding-left: 15%;
    padding-right: 15%;
    padding-top: 3%;
    padding-bottom: 3%;
}
#sernac div.content {
    margin:0;
}
@media screen and (max-width: 768px) {
    #sernac div.all{
        padding-right: 3%;
        padding-left:3%;
        padding-top: 3%;
        padding-bottom: 3%;
    }
    #sernac div.content {
        max-width: 100%;
    }
    
}