* {
    box-sizing: border-box; margin:0; padding:0;
}

.row::after {
    content: "";
    clear: both;
    display: table;
}

[class*="col-"] {
    float: left;
    padding: 2px 10px 0 5px;
    text-align: left;
    vertical-align:top;
}

.col-1 {
    width: 8.33%;
}

.col-2 {
    width: 16.66%;
}

.col-3 {
    width: 25%;
}

.col-4 {
    width: 33.33%;
}

.col-5 {
    width: 41.66%;
    text-align: right;
}

.col-6 {
    width: 50%;
}

.col-7 {
    width: 58.33%;
}

.col-8 {
    width: 66.66%;
}

.col-9 {
    width: 75%;
}

.col-10 {
    width: 83.33%;
}

.col-11 {
    width: 91.66%;
}

.col-12 {
    width: 100%;
}

@media only screen and (max-width: 450px) {
    [class*="col-"] {
        width: 100%;
        border: none;
    }

    body {
        font-size: 0.9em;
    }
}