article#achat{
  text-align:center;
}

article#achat > div{
  margin:10px auto;
}


div.chat{
  background-color: var(--red-color,#c22a39);
  padding:20px 0px;
  margin:15px 0px;
  border-radius:5px;
  min-width:200px;
  color:white;
  text-align:center;
  max-width:250px;
}
div.chat:hover{
  font-size:1.2em;
  padding:22px 3px;
  margin:13px -3px;
  cursor:pointer;

}