html,
body {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background-image: url("images.jpg");
  background-position: center;
  background-size: cover;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-image: linear-gradient(to top, #9795f0 0%, #fbc8d4 100%);
}
.container {
  text-align: center;
  background: rgba(0, 0, 0, 0.6);
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 20px;
  position: absolute;
  top: 10%;
  color: #fff;
}

.container input[type="number"] {
  padding: 10px;
  font-size: 16px;
  border-radius: 5px;
  border: none;
  width: 80%;
  margin: 10px 0;
  text-align: center;
}

.container h1 {
  font-size: 40px;
}

.container .button {
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  background-color: #2196f3;
  color: white;
  cursor: pointer;
  margin-top: 10px;
}
.hasil {
  bottom: 65px;
  color: #fff;
  padding: 10px;
  margin-top: 5px;
  text-align: center;
  width: 90%;
  align-items: center;
  position: static;
}

.button-ukuran {
  position: absolute;
  bottom: 100px;
  right: 65px;
  border: none;
  padding: 15px 40px;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 10px;
}