html body {
  margin: 0;
  height: 100%;
  background-image: url(img/kockice.jpg);
  background-size: contain;
  background-size: cover;
  font-family: 'IBM Plex Sans Condensed', sans-serif;

}

#start, #igra {
  height: 600px;
  width: 900px;
  border: 1px solid gray;
  border-radius: 5px;
  margin:auto;
  margin-top: 50px;
  margin-bottom: 50px;
  background-color: white;
  opacity: 0.9;
}
#igra {
  visibility: hidden;
  display: none;
}
#prvi_igrac {
  width: 450px;
  height: 549px;
  border-right: 1px solid gray;
  float: left;
  display: inline;
  position: absolute;
}
#drugi_igrac {
  width: 450px;
  height: 549px;
  float: right;
  position: relative;
}
#uk_rez {
  width: 900px;
  border-bottom: 1px solid gray;
  height: 50px;
}
#runda {
  height: 40px;
  width: 40px;
  background-color: rgb(153, 0, 0);
  border-radius: 50%;
  text-align: center;
  color: white;
  padding-top: 5px;
  font-weight: 750;
  font-size: 21px;
  position: absolute;
  margin-top: -15px;
  margin-left: -20px;

}

.btn-primary {
  width: 150px;
  display: block;
  margin: 0 auto;
  margin-top: 287px;;
  font-size: 24px;
  letter-spacing: 3px;
}
.btn-success {
  margin-left: 172px;
  margin-top: 77px;
  letter-spacing: 1px;
}

h2 {
  text-align: center;
  padding-top: 28px;
  font-size: 45px;
  font-weight: 700;
  letter-spacing: 3px;
}
h3 {
  text-align: center;
  padding-top: 7px;
  letter-spacing: 4px;
}
p {
  padding-top: 128px;
  text-align: center;
  font-size: 79px;
  font-weight: 700;
}