body {
  margin: 0;
  padding: 0;
}

.top-nav {
  padding: 10px 20px;
  background-color: #2c2c2c;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0;
  padding: 0;
}

.navbar img {
  width: 50px;
  height: 60px;
  display: inline-block;
}

.top-nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.top-nav li {
  font-size: 14px;
  margin: 0;
  display: flex;
  align-items: center;
}

.top-nav ul li:not(:last-child) {
  margin-right: 40px;
}

.top-nav a {
  text-decoration: none;
  color: #f5f5f5;
  transition: color 0.3s ease-in-out;
}

.top-nav a:hover {
  color: #ff6600;
}

.side-bar {
  width: 200px;
  height: 100%;
  background-color: #f1f1f1;
  padding: 0;
  margin-top: 0;
}

.side-bar ul {
  list-style-type: none;
}

.side-bar li {
  display: block;
  color: #000;
  padding: 8px 10px;
  text-decoration: none;
}

.side-bar li:hover {
  background-color: #555;
  color: white;
}

.side-bar-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.container {
  display: flex;
  flex-direction: row;
  gap: 20px;
}


.fsfw-desc {
  margin-top: 60px;
}

#fsfw-content, #sat-rs-content {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-right: 170px;
  padding-left: 170px;
  transform: translateY(90px);
}

#fsfw-links, #sat-rs-links {
  display: flex;
  align-items: center;
}

.develop a,
.master a,
.links a {
  text-decoration: none;
  color: #000;
}

.develop li,
.master li,
.links li {
  list-style: none;
  border: 2px solid #000;
  margin: 20px;
  padding-left: 0;
  padding-right: 0;
  width: 160px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 60px;
  transition: color 0.3s;
}

.develop li:hover,
.master li:hover {
  background-color: #00beff;
}

.develop li {
  margin-right: 60px;
}

#sat-rs-content {
  display:none;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-right: 170px;
  padding-left: 170px;
  transform: translateY(90px);
}


#sat-rs-content.hidden {
  display: none;
}
#sat-rs-content.visible {
  display: none;
}
#fsfw-content.visable {
  display:flex;
}

#fsfw-content.hidden {
  display:none 
 
}