[class*="col-"]
{
    background-color:white;
    border: 0px solid black;
    text-align: center;
    line-height: 40px;
}

.container {

    padding-right: auto;
    padding-left: auto;
    margin-right: auto;
    margin-left: auto;



;
}
@media (min-width: 768px) {
    .container {
        width: 750px;
    }
}
@media (min-width: 992px) {
    .container {
        width: 970px;
    }
}
@media (min-width: 1200px) {
    .container {
        width: 1170px;
    }
}