.spinner {
  height:60px;
  width:60px;
  margin:0px auto;
  -webkit-animation: rotation .6s infinite linear;
  -moz-animation: rotation .6s infinite linear;
  -o-animation: rotation .6s infinite linear;
  animation: rotation .6s infinite linear;
  border-left:6px solid rgba(0,174,239,.15);
  border-right:6px solid rgba(0,174,239,.15);
  border-bottom:6px solid rgba(0,174,239,.15);
  border-top:6px solid #6699cc;
  border-radius:100%;
}

@-webkit-keyframes rotation {
  from {-webkit-transform: rotate(0deg);}
  to {-webkit-transform: rotate(359deg);}
}
@-moz-keyframes rotation {
  from {-moz-transform: rotate(0deg);}
  to {-moz-transform: rotate(359deg);}
}
@-o-keyframes rotation {
  from {-o-transform: rotate(0deg);}
  to {-o-transform: rotate(359deg);}
}
@keyframes rotation {
  from {transform: rotate(0deg);}
  to {transform: rotate(359deg);}
}

.zoom_button {
  height: 30px;
  width: 30px;
  border-radius: 15px;
  padding: 5px;
  text-align: center;
  font-family: OpenSansExtraBold,"Open Sans",Arial,sans-serif;
  overflow: hidden;

  background-color: #fff;
  color: #505050;

  box-shadow: 0 0 10px #000;
  font-size: 20px;
  cursor: pointer;
}

.zoom_button:hover {
  border: 3px;
}

body {
  margin: 0;
}

.topo {
  width: 100vw;
  height: 100vh;
  display: flex;

  svg {
    width: 100%;
    height: 100%;
  }
}