*{
    margin: 0;
    padding: 0;
} 
body{
   font-family: sans-serif; 
}
.app-container{
  height: 600px;
  width: 350px;
  background-image: linear-gradient(#580e8f,#9200ff);
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  position: absolute; 
}
.top-box{
  height: 150px;
  background-color: #9100fb;
  border-bottom-left-radius: 80px;
  border-bottom-right-radius: 80px;
}
.top-box p
{
  text-align: center;
  padding-top: 20px;
  color: #fff;
}
.left-icon{
  float: left;
  margin-left: 30px;
}
.right-icon{
  float: right;
  margin-right: 30px;
} 
.middle-box{
  height: 150px;
  background-image: linear-gradient(#580e8f,#9200ff);
  margin: -70px 30px 20px;
  color: #fff;
  text-align: center;
  font-size: 12px;
  border-radius: 10px;
}
.middle-box h1{
  padding-top: 30px;
  padding-bottom: 30px;
  font-size: 50px;
  font-weight: normal;
}
.middle-box h1 span
{
 font-size: 20px;
 margin-left: 5px;
 bottom: 18px;
 position: relative;
}
.payment-option-btn
{
  color: #fff;
  margin: 5px 30px;
  height: 30px;
  width: 290px;
  background-color: #9100fd;
  border: none;
  cursor: pointer;
}
.card-details
{
   background: #fff ;
   color: #555;
   margin: 10px 30px;
   padding: 10px;
}
.card-details p
{
  font-size: 14px;
}
.card-details label
{
  font-size: 10px;
  line-height: 20px;
}
.card-num-field-group
{
  margin-top: 10px;
}
.date-field-group
{
  margin-top: 10px;
  display: inline-block;
}
.cvc-field-group
{
  margin-top: 10px;
  display: inline-block;
  float:right;
}
.name-field-group
{
  margin-top: 10px;
}
.card-num-field, .name-field-group
{
  width: 265px;
}
.date-field, .cvc-field
{
 width: 80px;
}
.card-details input
{
  border: 1px solid #ccc;
  height: 22px;
  padding: 5px;
  font-size: 10px;
}
.card-details input::placeholder
{
  color: #ccc;
}
.pay-btn
{
  width: 270px;
  color: #fff;
  margin-top: 4px;
  height: 30px;
  background-color: #9100fd;
  border: none;
  cursor: pointer; 
}