jku-se-react/src/App.css

body{
  background-image: url("./bg.jpg");
  background-repeat: no-repeat;
  background-size: cover;
}

#wrapper{
  max-height: 80vh;
  overflow: hidden;
  position: relative;
  min-width: 250px;
  left: 30px;
}

@media (max-device-width: 1100px) { 
  #wrapper{
    width: 100%;
  }
}

.header{
  background-color: #222;
  color: #fff;
}

.header p{
  margin: 0px;
  text-align: center;
  font-size: 20px;
  font-weight: bold;
}

.person {
  background-color: #222;
  color: #fff;
  cursor: pointer;
  padding: 8px;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 15px;
  transition: 0.4s;
  font-weight: bold;
}


#online {
  margin-bottom: 3px;
}

#offline .person{
  opacity: 0.8;
}

#offline .person:hover, #online .person:hover {
  background-color: #777;
}

.rank{
  background-color: #fff;
  float: left;
  padding: 2px 5px;
  margin-right: 7px;
  color: #000;
  border-radius: 1px;
}

.color{
  float: left;
  margin-right: 7px;
  font-size: 12px;
  margin-top: 3px;
}

.name{
  font-weight: bold;
  float: left;
}

.speed{
  opacity: 0.7;
  float: right;
  margin-right: 30px;
  font-weight: normal;
}


.extend{
  padding: 0 18px;
  display: none;
  overflow: hidden;
  font-weight: normal;
  min-width: 300px;
}

.person .extend img{
  width: 120px;
  float: left;
  margin-right: 20px;
  margin-top: 10px;
}

#wrapper{
  float: left;
}

.mapWrapper{
  float: right;
}

#id{
  background-color: #fff;
}

button{
  width: 50px;
  height: 50px;
}