*{
  box-sizing: border-box;
}
.container {
  width: 85%;
  margin: 15px auto;
  /*background-color: green;*/
}

.row {
  display: flex;
  flex-direction: row;
  justify-content:center;
  flex-flow: wrap;
}

.card {
  width: 28%;
  background: #fff;
  /*border: 2px solid #ccc;*/
  margin-bottom: 3px;
  margin-top: 7px;
  margin-left: 16px;
  transition: 0.7s;
}

.card-header {
  text-align: center;
  padding: 20px 0px;
  background: linear-gradient(to right, #ff416c, #ff4b2b);
  color: #fff;
}

.card-body {
 /* padding: 30px 20px;*/
  text-align: center;
  font-size: 20px;
  font-weight: 600;
}

.card-body .btn {
  display: block;
  color: #fff;
  text-align: center;
  letter-spacing: 1px;
  margin-top: 1px;
  text-decoration: none;
  padding: 10px 0px;
}
.card-body .btn1{
  background-color: #ff00ff;
}
.card-body .btn2{
  background-color: #cc6600;
}
.card-body .btn3{
  background-color: #660000;
}
.card-body .btn4{
  background-color: #311b92;
}
.card-body .btn5{
  background-color: #008000;
}
.card-body .btn6{
  background-color: #ff0000;
}

.card:hover {
  transform: scale(1.01);
  box-shadow: 0 0 40px -10px rgba(0, 0, 0, 0.85);
}

@media screen and (min-width: 1921px) {
        .card-body{
          font-size: 26px;
        }
}

@media screen and (max-width: 1024px) {
  .container{
    width: 82%;
  }
  .card {
    width: 31%;
  }
  .card-body{
          font-size: 17px;
        }
}

@media screen and (max-width: 900px) {
  .card {
    width: 45%;
    margin-left: 5px;
    margin-bottom: 0px;
  }
}
@media screen and (max-width: 600px) {
  .container {
    width: 93%;
  }

  /*.heading {
    padding: 20px;
    font-size: 20px;
  }*/

  .card {
    width: 45%;
    margin-left: 5px;
    margin-bottom: 0px;

  }
  .card-body{
    font-size: 12px;
  }
}