.full_width, .one_half, .one_third, .two_third, .one_fourth, .three_fourth, .one_fifth, .two_fifth, .three_fifth, .four_fifth, .one_sixth, .five_sixth
{
    float: left;
}
.clear_column
{
    clear: both;
    display: block;
    font-size: 0;
    height: 0;
    line-height: 0;
    width: 100%;
    overflow: hidden;
}
.full_width
{
    width: 100%;
}
.one_half
{
    width: 50%;
}
.one_third
{
    width: 33.3%;
}
.two_third
{
    width: 66.6%;
}
.one_fourth
{
    width: 25%;
}
.three_fourth
{
    width: 75%;
}
.one_fifth
{
    width: 20%;
}
.two_fifth
{
    width: 40%;
}
.three_fifth
{
    width: 60%;
}
.four_fifth
{
    width: 80%;
}
.one_sixth
{
    width: 16.6%;
}
.five_sixth
{
    width: 83.4%;
}
@media screen and (max-width: 600px)
{
    .full_width, .one_half, .one_third, .two_third, .one_fourth, .three_fourth, .one_fifth, .two_fifth, .three_fifth, .four_fifth, .one_sixth, .five_sixth
    {
        clear: both;
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        margin-bottom: 1em;
    }
}