body
{
  text-align: center;
}

.outer
{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
  margin-left: 550px;
  height: 400px;
  width: 400px;
  margin-top: 50px;
}

.btns
{
  margin-top: 20px;
  height: 150px;
  width: 150px;
  border: 5px solid black;
  border-radius: 20%;
}

.flash
{
  background-color: white !important;
}

.cornflowerblue
{
  background-color: cornflowerblue;
}
.rosybrown
{
  background-color: rosybrown;
}
.goldenrod
{
  background-color: goldenrod;
}
.greenyellow
{
  background-color: greenyellow;
}