.liste
 {
	clear: both;
	float: left;
	width: 100%;
}

.block_liste {
	height: 250px;
	margin-left: 3px;
	padding: 5px;
	margin-bottom: 10px;
	border-color: #333333;
	border-width: 1px;
	border-style: solid;
	width: 48%;
	clear: none;
	float: left;
	
	overflow:auto;
}
 
@media (max-width: 720px)
{ .block_liste { clear: both; } }

	.block_liste .myButton {             
	margin-right: 6px;             
	padding-left: 6px;             
	padding-bottom: 3px;             
	padding-right: 6px;             
	padding-top: 3px;             
	min-width: 10px;
          
}

.Block_Button {
	right: -5px;
	position: relative;
	float: right;
}
.block_legend {
	font-size: 1.1em;
}