img.displayed {
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: auto

     }

.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.item {
  flex: 0 1 calc(100%/4 - 1%*2);
  margin-top:5%;

}

.item-box {
  width: 100%;
  text-align: center;
}

.item-box img {
  width: 70%;
}

.button {
    background-color: #4169E1;
    border: none;
    color: white;
    padding: 4%;
    display: inline-block;
    font-size: 100%;
    text-align: center;
    margin-top: 2%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
    font-weight:bold;

}

.button1{
    background-color:#2E8B57;
    border: none;
    color: white;
    padding: 4%;
    display: inline-block;
    font-size: 100%;  
    text-align: center;
    margin-top: 2%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
    font-weight:bold;
}

.button2{
    background-color:#DC143C;
    border: none;
    color: white;
    padding: 4%;
    display: inline-block;
    font-size: 100%;  
    text-align: center;
    margin-top: 2%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
    font-weight:bold;
}