body {
  background : linear-gradient(to bottom right, rgb(192, 132, 53), rgb(158, 65, 158));
  color: #e7d8d8;
  font-size: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;
  margin: 0;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.7rem 10%;
  height: 1rem;
  background-color: none;
  box-shadow: 0 1px 10px white;
}

header .logo {
  text-align: left;
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
  color: yellow;
}
header .logo i {
  font-size: 2.2rem;
  text-align: left;
  justify-items: center;
}

header .navbar ul {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
}
header .navbar li {
  margin-left: 2rem;
}
header .navbar ul li a {
  font-size: 1.3rem;
  color: white;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.04rem;
  transition: 0.2s;
}
header .navbar ul li a.active,
header .navbar ul li a:hover {
  color: white;
  border-bottom: 0.2rem solid yellow;
  padding: 0.5rem 0;
}

header .logo:hover {
  color: white;
  border-bottom: 0.2rem solid yellow;
  padding: 0.5rem 0;
}

.container {
  padding: 5px;
  margin-top: 70px;
  align-items: center;
  justify-items: center;
  height: 580px;
  width: 460px;
  border-radius: 20px; /* Add border-radius for curved corners */
  box-shadow: 0 0 40px white; /* Optional: Add a shadow for depth */
}

span, .button {
  background-color: rgb(62, 13, 238);
  color: white;
  text-align: center;
}

.calculator {
  margin-top: 30px;
  margin-left: 10px;
  margin-right: 20px;
  align-items: center;
  justify-content: center;
  padding: 20px;
  height: 500px;
  width: 400px;
  border-radius: 20px; /* Add border-radius for curved corners */
  overflow: hidden;
  background-color: whitesmoke;
}

#display {
  width: 100%;
  margin: 15px 0;
  padding: 20px;
  font-size: 1.5em;
}

.buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

button {
  padding: 15px;
  font-size: 2em;
  cursor: pointer;
}

/* Align buttons to their respective rows and columns */
button:nth-child(1),
button:nth-child(2),
button:nth-child(3),
button:nth-child(4) {
  grid-row: 1;
}

button:nth-child(5),
button:nth-child(6),
button:nth-child(7),
button:nth-child(8) {
  grid-row: 2;
}

button:nth-child(9),
button:nth-child(10),
button:nth-child(11),
button:nth-child(12) {
  grid-row: 3;
}

button:nth-child(13),
button:nth-child(14),
button:nth-child(15),
button:nth-child(16) {
  grid-row: 4;
}

button:nth-child(17),
button:nth-child(18),
button:nth-child(19),
button:nth-child(20) {
  grid-row: 5;
}

/* Align buttons to the rightmost column */
button:nth-child(4),
button:nth-child(8),
button:nth-child(12),
button:nth-child(16),
button:nth-child(20) {
  grid-column: 4;
}

/* Different color for operators */
button:nth-child(4),
button:nth-child(8),
button:nth-child(12),
button:nth-child(16),
button:nth-child(20) {
  background-color: lightseagreen; /* Tomato color for operators */
  color: #fff; /* White text color for operators */
}

/* Different color for CE, C, and % buttons */
button:nth-child(1),
button:nth-child(2),
button:nth-child(3) {
  background-color: lightseagreen; /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

/* Different color for the "=" button */
button:nth-child(20) {
  background-color: #6b0e87; /* Cadet Blue color for "=" button */
  color: #fff; /* White text color for "=" button */
}

/* Hover section for buttons */
button:nth-child(4):hover {
  background-color: rgb(31, 166, 162); /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

button:nth-child(8):hover {
  background-color: rgb(31, 166, 162); /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

button:nth-child(12):hover {
  background-color: rgb(31, 166, 162); /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

button:nth-child(16):hover {
  background-color: rgb(31, 166, 162); /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

button:nth-child(20):hover {
  background-color: rgb(31, 166, 162); /* Tomato color for operators */
  color: #fff; /* White text color for operators */
}

/* Different color for CE, C, and % buttons */
button:nth-child(1):hover {
  background-color: rgb(31, 166, 162); /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

button:nth-child(2):hover {
  background-color: rgb(31, 166, 162); /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

button:nth-child(3):hover {
  background-color: rgb(31, 166, 162); /* Slate Blue color for CE, C, and % buttons */
  color: #fff; /* White text color for CE, C, and % buttons */
}

/* Different color for the "=" button */
button:nth-child(20):hover {
  background-color: #892ca5; /* Cadet Blue color for "=" button */
  color: #fff; /* White text color for "=" button */
}