String style() {
  String ptr = "html { font-family: 'Open Sans', sans-serif; display: block; margin: 0px auto; text-align: center;color: #333333;}\n";
  ptr += "body{margin-top: 50px;}\n";
  ptr += "h1 {margin: 50px auto 30px;}\n";
  ptr += ".superscript{font-size: 17px;font-weight: 600;position: absolute;right: -20px;top: 15px;}\n";
  ptr += ".data{padding: 10px;}\n";
  ptr += ".side-by-side{display: inline-block;vertical-align: middle;position: relative;}\n";
  ptr += ".humidity-text, .temperature-text, .switch-text{font-weight: 600;padding-left: 15px;font-size: 19px;width: 160px;text-align: left;}\n";
  ptr += "a {text-decoration: none; margin-top:50px; margin-bottom:50px;}\n";
  ptr += ".setting_row{padding: 20px;}\n";
  ptr += "label.setting{padding-bottom: 10px; font-weight: bold;}\n";
  ptr += ".center { margin-left: auto; margin-right: auto;}\n";
  ptr += "td {padding: 5px;}\n";
  ptr += "div.foot{margin-top: 80px;}";
  ptr += "fieldset {width: 200px; margin: auto; border-radius: 10px;}";
  //ptr += "legend {padding-left: 10px; padding-right: 10px; font-weight: bold;";
  
// vlhkost
  ptr += ".humidity-icon{background-color: #3498db;width: 30px;height: 30px;border-radius: 50%;line-height: 36px;}\n";
  ptr += ".humidity{font-weight: 300;font-size: 60px;color: #3498db;}\n";

// teplota
  ptr += ".temperature-icon{background-color: #f39c12;width: 30px;height: 30px;border-radius: 50%;line-height: 40px;}\n";
  ptr += ".temperature{font-weight: 300;font-size: 60px;color: #f39c12;}\n";


// switch
  ptr += ".switch input{display:none;}\n";
  ptr += ".switch{display:inline-block;  width: 60px; /*=w*/ height: 30px; /*=h*/  margin:8px;  transform:translateY(50%);  position:relative;}\n";
  ptr += ".slider{position:absolute;  top:0;  bottom:0;  left:0;  right:0;  border-radius:30px;  box-shadow:0 0 0 2px #777,0 0 4px #777;  cursor:pointer;  border:4px solid transparent;  overflow:hidden;  transition:0.4s; text-align: left;}\n";
  ptr += ".slider:before{position:absolute;  content:\"\";  width:100%;  height:100%;  background-color:#777;  border-radius:30px;  transform:translateX(-30px); /*translateX(-(w-h))*/ transition:0.4s;}\n";
  ptr += "input:checked + .slider:before{transform:translateX(30px); /*translateX(w-h)*/ background-color:limeGreen;}\n";
  ptr += "input:checked + .slider{box-shadow:0 0 0 2px limeGreen,0 0 8px limeGreen;} .switch200 .slider:before{width:200%;  transform:translateX(-82px); /*translateX(-(w-h))*/ }\n";
  ptr += ".switch200 input:checked + .slider:before{background-color:red;}\n";
  ptr += ".switch200 input:checked + .slider{box-shadow:0 0 0 2px red,0 0 8px red;}\n";


  return ptr;
}