* { box-sizing: border-box; }

body { 
  color: #666;
}

/* STRUCTURE */

.wrapper {
	padding: 0px;
	max-width: 100%;
	width: 100%;
	margin: 20px auto;
}

.columns {
	display: flex;
	flex-flow: row wrap;
	justify-content: center;
	margin: 5px 0;
}

.column {
	flex: 1;
	border: 0px solid gray;
	margin: 0px;
	padding-top: 15px;
	&:first-child { margin-left: 0; }
	&:last-child { margin-right: 0; }
	
}


/* menu-box, začátek */
.menu-box-01 a {
	display:block;
	height:103px;
	width:103px;
	overflow:hidden;
	margin-left:auto;
	margin-right:auto;
}

.menu-box-01 a:hover {
	display: block;
	text-indent:-103.5px; 
}
/* menu-box, konec */

.lang-box {
	float: right;
	padding-right: 50px; 
}



@media screen and (max-width: 980px) {
  .columns .column {
		margin-bottom: 5px;
    flex-basis: 40%;
		&:nth-last-child(2) {
			margin-right: 0;
		}
		&:last-child {
			flex-basis: 100%;
			margin: 0;
		}
	}
}

@media screen and (max-width: 680px) {
	.columns .column {
		flex-basis: 100%;
		margin: 0 0 5px 0;
	}
}