/* border box sizing */

body,
div,
ul, li, p,
h1, h2, h3, h4, h5, h6  {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;
    border: 1px solid transparent;
}

/* flex-box containers */

.container {
    display: -webkit-flex;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    padding: 0;
    margin: 0;
}

.row {
    flex-direction: row;
    width: 100%;
}

.column {
    flex-direction: column;
}