body {
  display: block;
  background-color: rgb(219, 213, 213);
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif,
    "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

/* ********** Start of code for Navigation Bar **********  */
.nav-bar {
  background-color: #1f2937;
  padding: 1vw;
  display: flex; /*Enable flexbox layout */
  flex-direction: row;
  justify-content: space-between; /*This defines the alignment along the main axis. It helps distribute extra free space leftover when either all the flex items on a line are inflexible, or are flexible but have reached their maximum size. 
  It also exerts some control over the alignment of items when they overflow the line. */
  flex-wrap: wrap;
  flex-shrink: 0;
}

.nav-bar ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.nav-bar li {
  float: left;
}

.nav-bar li a {
  color: #f9faf8;
  padding-top: 0.5vw;
  padding-bottom: 0.5vw;
  padding-left: 0.5vw;
  padding-right: 0.5vw;
  text-decoration: none;
  font-size: 2rem;
}

.nav-bar li a:hover {
  background-color: #15d48e;
}

.nav-bar a:active {
  background-color: #0704aa;
}

/* ********** End of code for Navigation Bar **********  */

#calculator-body {
  display: flex;
  /* flex: 1; */
  flex-direction: column;
  justify-content: space-evenly;
  height: max-content;
  width: max-content;

  background-color: rgb(197, 188, 188);
  padding: 10px;
}

#displayOutput {
  display: flex;
  flex-direction: row;
  flex: 1;

  min-height: 100px;
  max-height: 200px;
  padding: 5px;
  border-width: 5px;
  font-size: 40px;
  justify-content: end;
  color: rgb(62, 65, 63);
  background-color: rgb(162, 172, 181);
  border-style: double;
  border-color: rgb(42, 165, 61);
}

#userInput {
  display: flex;
  flex: 1;
  justify-content: space-around;
}

#column2 {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-around;
  justify-items: end;
}

button {
  width: 60px;
  height: 60px;
  font-size: 30px;
  padding: 1px;
  border-radius: 10px;
  font-style: italic;
  background-color: rgb(71, 71, 75);
  color: rgb(31, 34, 36);
  border-style: inset;
  border-color: rgb(77, 112, 217);
}

#column1 button {
  background-color: rgb(255, 137, 3);
}

#column2 button {
  background-color: rgb(4, 165, 68);
}

#clear {
  color: rgb(255, 0, 25);
}