html, body {
  font-family: 'Roboto', sans-serif;
}
body {
}

.tooltip .tooltip-inner {
  background: black;
  opacity: 0.7;
}

#bt-start-screen {
  display: flex;
  flex-direction: row;
  min-height: 100vh;
}
div.bt-col {
  flex-grow: 1;
  position:relative; 
  
}
div.bt-logo-div {
  position: absolute;
  top: 25%;
  left: 50%;
  transform: translate(-50%, 0);
}
@media only screen and (max-width:600px) {
  div.bt-logo-div {
    width: 50%;
  }
}
@media only screen and (min-width: 700px) {
  div.bt-logo-div {
    width: 40%;
  }
}
@media only screen and (min-width: 900px) {
  div.bt-logo-div {
    width: 35%;
  }
}

@media only screen and (min-width: 1200px) {
  div.bt-logo-div {
    width: 30%;
  }
}

#bt-start-screen #coastal {
 background-image: url(bgr_coastal.webp);
 background-size: cover;  
}

#bt-start-screen .img-fluid {
  width: 100%;
}

#bt-start-screen #forest {
 background-image: url(bgr_forest.webp);
 background-size: cover;  
}

#localeChangeDiv {
  text-align: center;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 0);
  background-color: black;
  opacity: 0.6;
  font-size: x-large;
  padding: .6em;
  z-index: 50;
}

#localeChangeDiv a.localeChangeLink {
  color: white;
  margin-left: .3em;
  margin-right: .3em;
}
#localeChangeDiv a.localeChangeLink .active {
 font-weight: bold; 
 text-decoration: underline;
}

#projectLogoCoastal {
  position: absolute;
  bottom: 0;
  left: 0;
  background: white;
}
#projectLogoForest {
  position: absolute;
  bottom: 0;
  right: 0;
  background: white;
}