* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
a {
  text-decoration: none;
}
ol,
ul {
  list-style: none;
}

body {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  background-color: #0a0a24;
  color: white;
}
.container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 40px 10px;
}
.freecodecamp-logo {
  width: 100%;
  height: 30px;
  margin-bottom: 20px;
}
h1 {
  font-size: 2.5rem;
  margin: 20px 0;
  text-align: center;
}
#change-due {
  text-align: left;
  font-size: 1.2rem;
}

.text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin: 10px 0 20px;
}
label {
  font-size: 18px;
}
#cash {
  height: 30px;
  padding: 10px;
  margin: 10px;
  font-size: 15px;
}
#purchase-btn {
  cursor: pointer;
  width: 100px;
  height: 30px;
  margin: 10px;
  color: #0a0a23;
  font-size: 18px;
  font-weight: bold;
  background-color: #feac32;
  background-image: linear-gradient(#fecc4c, #ffac33);
  border-color: #feac32;
  border-width: 3px;
}
.box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
#price-screen {
  border: 10px solid #99c9ff;
  background-color: black;
  height: 50px;
  width: 200px;
  margin-left: -40px;
  color: white;
  font-size: 1.2rem;
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}
.connector {
  margin-left: -20px;
  background-color: #99c9ff;
  height: 30px;
  width: 40px;
}
.top-registry {
  display: flex;
  justify-content: space-around;
  border-radius: 35px 35px 0 0;
  padding-top: 20px;
  background-color: #99c9ff;
  height: 260px;
  width: 325px;
}
.button-registry {
  width: 25%;
}
.btn {
  border-radius: 10%;
  border: none;
  width: 20px;
  height: 20px;
  background-color: black;
}

.cash-display-registry {
  font-size: 1.1rem;
  background-color: white;
  height: 95%;
  color: black;
  padding: 10px;
}
.block-circle {
  background-color: #99c9ff;
  height: 50px;
  width: 325px;
  margin-top: 10px;
}
.circle {
  margin: 15px auto;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  background-color: black;
}