* { /* universal */
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Calibri';
}

body {
    height: 100%;
}

header {
  display: flex;
  border-top: 1px solid;
  border-bottom: 1px solid;
  padding: 10px;
}

.head {
  padding: 5px;
  padding-right: 20px;
  padding-left: 20px;
  margin-left: 20px;
  border: 1px solid;
  font-weight: bold;
  font-size: 20px;
}

footer {
  padding: 10px;
  border-top: 1px solid;
  border-bottom: 1px solid;
  text-align: center;
}

main {
    min-height: 630px;
    display: flex;
    justify-content: center;
    padding: 20px;
    padding-top: 10px;
    padding-bottom: 10px;
}

.left {
    display: flex;
    flex-direction: column;
    border: 0px solid;
    width: 20%;
    margin: 5px;
    border: solid 1px;
    padding: 5px;
}

.right {
    display: flex;
    flex-direction: column;
    border: 0px solid;
    width: 20%;
    margin: 5px;
    border: solid 1px;
    padding: 5px;
}

.center {
    display: flex;
    flex-wrap: wrap; 
    border: 0px solid;
    width: 60%;
    margin: 5px;
    align-items: flex-start; 
    border: solid 1px;   
    padding: 5px;
}

.card {
    display: flex;
    border: 1px solid;
    margin-bottom: 5px;
    min-height: 200px;
        border-radius: 5px; 
        padding-left: 10px;
        padding-top: 10px;
}

.produk {
    padding-left: 5px;
    padding-right: 5px;
    width: 25%;
}

@media screen and (max-width: 1000px) {
  main {
    flex-direction: column;
}

.left,
.center,
.right,
.produk {
    width: 100%;
    min-height: 10px;
    flex-direction: column;
}
.right {
  order: 1;
}

.left {
  order: 0;
}

.center {
  order: 2;
}

}