body {
  background-color: pink;
  color: Red;
  font-family: comics-sans;
}
.back{
  
  }

.cont1{
  display: flex;
  flex-flow: column wrap;
  justify-content: space-between;
  justify-content: center;
  align-content: center;
  color: purple;  
  }
.centr{
  display: flex;
  justify-content: center;
  }
.der{
  display: flex;
  justify-content: flex-end;
  }
.izq{
  display: flex;
  justify-content: flex-start;
  
  }