div.assignment, div.announcement {
  padding: 0;
  margin-left: 0%;
  margin-right: 0%;
  margin-top: 1em;
  margin-bottom: 0.5em;
  background: rgb(225,225,255);
  font-weight: normal; 
}

div.button {
  padding: 0.5em;
  margin-left: 0%;
  margin-bottom: 1.5em;
  margin-top: 1.5em;
  background-color: lightblue;
  border: solid navy;
  border-width: thin;	
  width: 90%;
  color: navy;
}