style.css

/* Import Google Font - Poppins */
@import url("https://fonts.googleapis.com/css2?family=Kdam Thmor Pro:wght@400;500;600;700&display=swap");
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Kdam Thmor Pro", sans-serif;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 0 10px 0 0;
  background: url(dolla\ .jpg)
}

.wrapper {
  width: 370px;
  padding: 30px;
  border-radius: 7px;
  background: #fff;
}

.wrapper h1 {
  font-size: 30px;
  font-weight: 100;
}
.wrapper form {
  margin: 40px 0 20px 0;
}
form :where(input, select, button) {
  width: 100%;
  outline: none;
  border-radius: 5px;
  border: none;
}
form p {
  font-size: 18px;
  margin-bottom: 5px;
}
form input {
  height: 50px;
  font-size: 17px;
  padding: 0 15px;
  border: 1px solid #c4c4c4;
}
form input:focus {
  padding: 0 14px;
  border: 2px solid #ae2929;
}
form .drop-list {
  display: flex;
  margin-top: 20px;
  align-items: center;
  justify-content: space-between;
}
.drop-list .select-box {
  display: flex;
  width: 115px;
  height: 45px;
  align-items: center;
  border-radius: 5px;
  justify-content: center;
  border: 1px solid #d3a9a9;
}
.select-box img {
  max-width: 21px;
}
.select-box select {
  width: auto;
  font-size: 16px;
  background: none;
  margin: 0 -5px 0 5px;
}

.drop-list .icon {
  cursor: pointer;
  margin-top: 30px;
  font-size: 22px;
}
form .exchange-rate {
  font-size: 17px;
  margin: 20px 0 30px;
}
form button {
  height: 52px;
  color: #fff;
  font-size: 17px;
  cursor: pointer;
  background: #000000;
  transition: 0.3s ease;
}
form button:hover {
  background: #050039;
  transform: translate(0px, -7px);

}