body {
  margin-top: center;
}

padding {
  width: 1080px;
}

.buttonholder {
  
  border: solid ;
  border-radius: 30px;
  width: 540px;
  align-items: center;
  justify-content: center;
}


.bor, .net, .vin, .gai {
  width: 100px;
  height: 100px;
  display: flex;
}

 .bub, .riv, .pot, .aly {
  width: 100px;
  height: 100px;
  display: flex;
}

.bor {
  color: red;
}

div {
  color: blue;
}

ul {
  display: flex;
  list-style: none;
  flex-wrap: nowrap;
}

.aquarium {
  width: 600px;
  height: 250px;
}

.sign {
  
  border: solid ;
  border-radius: 30px;
  width: 540px;
  align-items: center;
  justify-content: center;
}