body {
  background-color: #222222;
  color: #FFFFFF;
  font-family: Arial;
  margin: 0;
  padding: 10;
}

 /* Style the buttons that are used to open and close the accordion panel */
.accordion {
  background-color: #225000;
  color: #FFFFFF;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  text-align: left;
  border: none;
  outline: none;
  transition: 0.4s;
}

/* Add a background color to the button if it is clicked on (add the .active class with JS), and when you move the mouse over it (hover) */
.active, .accordion:hover {
  background-color: #037bfc;
}

/* Style the accordion panel. Note: hidden by default */
.panel {
  padding: 0 18px;
  background-color: #222222;
  display: none;
  overflow: hidden;
} 

.accordion:after {
  content: '\02795'; /* Unicode character for "plus" sign (+) */
  font-size: 13px;
  color: #777;
  float: right;
  margin-left: 5px;
}

.active:after {
  content: "\2796"; /* Unicode character for "minus" sign (-) */
}

/* CSS for navigation links */
nav {
  background-color: #333333;
  padding: 10px;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

nav ul li {
  display: inline;
  margin-right: 10px;
}

nav ul li a {
  color: #FFFFFF;
  text-decoration: none;
}

/* CSS for header section */
header {
  background-color: #222222;
  padding: 20px;
  text-align: center;
}

h1 {
  font-size: 32px;
  margin: 0;
  color: #00BFBF;
}

p {
  font-size: 18px;
  margin: 10px 0;
}