.grid {
    overflow: hidden;
    width: 100%;
    margin: 0 -10px;
}

.grid-col-20, .grid-col-25, .grid-col-50, .grid-col-100 {
    padding: 0 10px;
    box-sizing: border-box;
    float: left;
}

.grid-col-20 {
    width: 20%;
}

.grid-col-25 {
    width: 25%;
}

.grid-col-50 {
    width: 50%;
}

.grid-col-100 {
    width: 100%;
}

.grid-col-right {
    text-align: right;
}

.grid-col-left {
    text-align: left;
}

.grid-col-center {
    text-align: center;
}

@media(max-width: 600px){
    .grid-col-m-20 {
        width: 20%;
    }

    .grid-col-m-25 {
        width: 25%;
    }

    .grid-col-m-50 {
        width: 50%;
    }

    .grid-col-m-100 {
        width: 100%;
    }
    
    .grid-col-m-right {
        text-align: right;
    }

    .grid-col-m-left {
        text-align: left;
    }

    .grid-col-m-center {
        text-align: center;
    }
}