style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@100;200;300;400;500;600;700;800;900&display=swap");
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}
html,
body {
  height: 100%;
  width: 100%;
  /* background-color: #7E30E1; */
  background-image: linear-gradient(
    to top,
    #dbdcd7 0%,
    #dddcd7 24%,
    #e2c9cc 30%,
    #e7627d 46%,
    #b8235a 59%,
    #801357 71%,
    #3d1635 84%,
    #1c1a27 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
}
.container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 92vw;
  height: 70vh;
  max-height: 420px;
  max-width: 350px;
  background-color: #e16ee58b;
  border-radius: 20px;
  box-shadow: 10px 10px 15px #49108b77;
}
.heading {
  margin: 20px;
  padding: 10px 20px;
  font-size: x-large;
  text-align: center;
  background-color: #f3f8ff16;
  color: #f3f8ffd4;
  border-radius: 12px;
  box-shadow: inset 5px 5px 15px #e16ee59e;
  text-transform: uppercase;
}
.inputContainer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 100%;
  height: 100%;
  margin: 20px 10px;
  border-radius: 0px 0px 20px 20px;
  color: #f3f8ffdf;
  box-shadow: inset 5px 5px 15px #e16ee59e;
}
.inputContainer label {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 100%;
  height: 90%;
}
.inputContainer label input {
  outline: none;
  border-radius: 5px;
  padding: 5px 10px;
  border: 3px solid #5d35877e;
  background-color: transparent;
  margin: 10px;
  width: 50%;
  color: white;
}
.inputContainer label input::placeholder {
  color: rgba(255, 255, 255, 0.707);
}
/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type="number"] {
  -moz-appearance: textfield;
}