#preloader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  overflow: hidden;background: #fff;
}

#preloader:before {
  content: "";
  position: fixed;
  top: calc(50% - 30px);
  left: calc(50% - 30px);
  border: 6px solid #f2f2f2;
  border-top: 6px solid #56829e ;border-radius: 50%;
  width: 60px;
  height: 60px;
  -webkit-animation: animate-preloader 1s linear infinite;
  animation: animate-preloader 1s linear infinite;
}

@-webkit-keyframes animate-preloader {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);
}

100% {-webkit-transform: rotate(360deg);transform: rotate(360deg);
}
}

@keyframes animate-preloader {
  0% {
    -webkit-transform: rotate(0deg);transform: rotate(0deg);
  }
  
  100% {-webkit-transform: rotate(360deg);transform: rotate(360deg);
  }
}

html, body {
  margin:0;
  padding:0;
}
#map_div {
  width:100%;
  height:100vh;
  margin:0;
  padding:0;
}
#selectContainer {
  position: fixed;
  top:0;
  z-index:1000;
  width:100%;
  padding:10px 0;
}
#select_country {
  width:200px;
  margin:0 auto;
}

.runBtn {
  
  width: 150px;
  display: block;
  padding: 10px;
  margin: 5px auto;
  border-radius: 15px;
  color:#fff;
  border:0;
  font-size:20px;
  cursor:pointer;
  background-color:gray;
}