.card-container
{
   width: 100%;
   display: flex;
   justify-content: center;
   align-items: center;
}
.content-section
{
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.content-section .card
{
    flex:1;
    margin:3px 3px;
    box-shadow: 0px 2px 8px 0px rgba(0,0,0,0.3);
}

.content-section .card img
{
    width: 100%;
    height:auto;
}
.battons
{
   display: flex;
   margin-top: 10px;
   margin-bottom: 10px;
   justify-content: center;
}

@media screen and (max-width:768px){

    .content-section
    {
        flex-direction: column;
    }
    
}