sample.css

.flex-container {
  /* We first create a flex layout context */
  display: flex;
  
  /* Then we define the flow direction 
     and if we allow the items to wrap 
   * Remember this is the same as:
   * flex-direction: row;
   * flex-wrap: wrap;
   */
  flex-flow: row wrap;
  
  /* Then we define how is distributed the remaining space */
  justify-content: center;
  
  padding: 0;
  margin-top: 150px;
  list-style: none;
}

.flex-item1 {
  background: #e38826;
  
  width: 300px;
  height: 350px;
  margin-top: 0px;
  
  color: white;
  font-weight: bold;
  font-size: 1.5em;
  padding: 10px;
  text-align: center;
  font-family: lexenddeca;
}
.flex-item2 {
  background: #006970;
  padding: 10px;
  width: 300px;
  height: 350px;
  margin-top: 0px;
 
  color: white;
  font-weight: bold;
  font-size: 1.5em;
  text-align: center;
}
.flex-item3 {
  background: #004241;
  padding: 10px;
  width: 300px;
  height: 350px;
  margin-top: 0px;
  
  color: white;
  font-weight: bold;
  font-size: 1.5em;
  text-align: center;
}
.img{

}
.button{
  padding: 5px;
  color: blue;
  
  border-top-right-radius: 20px;
  border-bottom-right-radius: 20px;
 border-top-left-radius: 20px;
  border-bottom-left-radius: 20px;
}

.button:hover {
  background-color: transparent;
}
h2{
  font-family: Bahnschrift Condensed;
}
p{
  font-family: Arial;
  font-size: 20px; 
}