@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");
:root {
  --primary-color: #3c6af5;
  --primary-color-red: #f42a3c;
  --primary-color-yellow: #fbd000;
  --primary-color-yellow-dark: #caa015;
  --secondary-color-white: #fff;
}

* {
  box-sizing: border-box;
  outline: 0;
}

body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: url("../img/img1.jpg") no-repeat center / 100%;
  font-family: "Luckiest Guy", cursive;
  font-size: 1.3em;
  line-height: 1.5em;
}

.container {
  max-width: 640px;
  margin: 50px auto;
  background: var(--primary-color);
  padding: 20px;
  border-radius: 10px;
  border: 3px solid var(--primary-color-red);
}

form input,
form label,
form button {
  display: block;
  width: 100%;
  margin-bottom: 10px;
}

form input {
  font-size: 24px;
  height: 50px;
  padding: 0 20px;
}

form input:focus {
  outline: 1px solid var(--primary-color);
}

form button {
  border: none;
  color: var(--secondary-color-white);
  font-size: 18px;
  font-weight: 700;
  height: 50px;
  cursor: pointer;
  margin-top: 30px;
}

.calculadora {
  width: 400px;
}

.container h1 {
  color: var(--secondary-color-white);
}
.display {
  font-size: 2em;
  width: 100%;
  text-align: right;
}

.btn {
  width: 100%;
  height: 50px;
  font-size: 1em;
  border: none;
  background: var(--primary-color-yellow);
  cursor: pointer;
}
.btn:hover {
  background: var(--primary-color-yellow-dark);
}