.ol-map {
display:inline-block;
height: 60%;
width: 100%;
background-color: #b5d0d0;
}

.alert{padding:15px;margin-bottom:20px;margin-top:5px;border:1px solid transparent;border-radius:4px}
.alert h4{margin-top:0;color:inherit}
.alert .alert-link{font-weight:700}
.alert>p,.alert>ul{margin-bottom:0}
.alert>p+p{margin-top:5px}.alert-dismissable,.alert-dismissible{padding-right:35px}
.alert-dismissable .close,.alert-dismissible .close{position:relative;top:-2px;right:-21px;color:inherit}
.alert-success{color:#3c763d;background-color:#dff0d8;border-color:#d6e9c6}
.alert-success hr{border-top-color:#c9e2b3}
.alert-success .alert-link{color:#2b542c}
.alert-info{color:#31708f;background-color:#d9edf7;border-color:#bce8f1}
.alert-info hr{border-top-color:#a6e1ec}
.alert-info .alert-link{color:#245269}
.alert-warning{color:#8a6d3b;background-color:#fcf8e3;border-color:#faebcc}
.alert-warning hr{border-top-color:#f7e1b5}
.alert-warning .alert-link{color:#66512c}
.alert-danger{color:#a94442;background-color:#f2dede;border-color:#ebccd1}
.alert-danger hr{border-top-color:#e4b9c0}
.alert-danger .alert-link{color:#843534}

.panel{border: 0px;
    background-color: white;
    margin: 0;
}

#banner_period1 {
    padding:10px;
    width:25%;
    display:inline-block;
	vertical-align: top;
}

#banner_finds {
    padding:10px;
    width:25%;
    display:inline-block;
	vertical-align: top;
}

#banner_material {
    padding:10px;
    width:25%;
    display:inline-block;
	vertical-align:top;
}



#popup {background: white;
}
.customExtentZoomClass {
    /* Copied from ol-zoom-extent */
    top: 4.643em;  
    left: .5em;
}
.customExtentZoomClass button {
    background: url(http://icons.iconarchive.com/icons/mazenl77/I-like-buttons-3a/512/Cute-Ball-Go-icon.png);
    width:50px;
    height:50px;
    background-size: 50px;
}
.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  color: #333;
  text-align: center;
  text-shadow: 0 1px 1px rgba(255,255,255,0.75);
  vertical-align: middle;
  cursor: pointer;
  background-color: #f5f5f5;
  background-image: -moz-linear-gradient(top,#fff,#e6e6e6);
  background-image: -webkit-gradient(linear,0 0,0 100%,from(#fff),to(#e6e6e6));
  background-image: -webkit-linear-gradient(top,#fff,#e6e6e6);
  background-image: -o-linear-gradient(top,#fff,#e6e6e6);
  background-image: linear-gradient(to bottom,#fff,#e6e6e6);
  background-repeat: repeat-x;
  border: 1px solid #ccc;
  border-color: #e6e6e6 #e6e6e6 #bfbfbf;
  border-color: rgba(0,0,0,0.1) rgba(0,0,0,0.1) rgba(0,0,0,0.25);
  border-bottom-color: #b3b3b3;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  border-radius: 4px;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff',endColorstr='#ffe6e6e6',GradientType=0);
  filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
  -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
  -moz-box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
}
a {
  color: #08c;
  text-decoration: none;
}

#popup {}

.ol-popup {
  position: absolute;
  background-color: white;
  -webkit-filter: drop-shadow(0 1px 4px rgba(0,0,0,0.2));
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.2));
  padding: 15px;
  border-radius: 10px;
  border: 1px solid #cccccc;
  bottom: 12px;
  left: -50px;
}
.ol-popup:after, .ol-popup:before {
  top: 100%;
  border: solid transparent;
  content: " ";
  height: 0;
  width: 0;
  position: absolute;
  pointer-events: none;
}
.ol-popup:after {
  border-top-color: white;
  border-width: 10px;
  left: 48px;
  margin-left: -10px;
}
.ol-popup:before {
  border-top-color: #cccccc;
  border-width: 11px;
  left: 48px;
  margin-left: -11px;
}
.ol-popup-closer {
  text-decoration: none;
  position: absolute;
  top: 2px;
  right: 8px;
}
.ol-popup-closer:after {
  content: "✖";
}

<style>
.rotate-north {
  top: 65px;
  left: .5em;
}
.ol-touch .rotate-north {
  top: 80px;
}

</style>