.sep-50 			{ height: 50px;}
.column 			{ display: table-cell;  }

.box 				{ display: -webkit-flex; display: -ms-flexbox; display: flex; overflow: hidden;}
.box .column 		{ flex: 1; }
@media (min-width: 300px) and (max-width: 1000px) {
.box 				{ display: -webkit-grid; display: -ms-grid; display: grid; overflow: hidden;}