* {
 font-size: 100%;
 font-family: Arial;
}

.title{
	text-align: center;
	font-size: 25px;
	font-weight: bold;
}

.btn_range{
	background-color: gray;
}

.img_spike_color {
	width: 35px;
}

.img_bewerbfoto {
	border: solid;
	width: 200px;
}

.img_micro {
	float: right;
	width: 200px;
	margin-top: 135px;
}
.btn-group .button {
  background-color: #4CAF50; /* Green */
  border: 1px solid green;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  cursor: pointer;
  float: left;
}

.btn-group .button:not(:last-child) {
  border-right: none; /* Prevent double borders */
}

.btn-group .button:hover {
  background-color: #3e8e41;
}

.column {
  float: left;
  width: 50%;
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}

.footer {
   position: fixed;
   left: 0;
   bottom: 0;
   width: 100%;
   background-color: black;
   color: white;
   text-align: left;
}