destination.css

* {
  box-sizing: border-box;
}

@import url("https:fonts.googleapis.com/css?family=Verdana:100,200,300,400,500,600,700,800,900");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}

:root {
  --clr: rgb(1, 18, 9);
}

body {
  justify-content: right;
  align-items: center;
  max-height: 70vh;
  background: rgb(248, 246, 245);
}


.navigation {
  padding-top: 2vh;
  max-width: 100vw;
  height: 75px;
  background: rgb(235, 235, 235);
  position: relative;
  display: flex;
  align-items: center;
  border-radius: 10px;
  justify-content: space-between;
}

.navigation ul {
  display: flex;
  width: 350px;
}

.navigation ul li {
  position: relative;
  list-style: none;
  width: 70px;
  height: 70px;
  z-index: 1;
}

.navigation ul li a {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: 100%;
  text-align: center;
  font-weight: 500;
}

.navigation ul li a .icon {
  position: relative;
  display: block;
  line-height: 75px;
  font-size: 1.5em;
  text-align: center;
  transition: 0.5s;
  color: var(--clr);
}

.navigation ul li.active a .icon {
  transform: translateY(-32px);
}

.navigation ul li a .text {
  position: absolute;
  color: var(--clr);
  font-weight: 400;
  font-size: 0.75em;
  letter-spacing: 0.05em;
  transition: 0.5s;
  opacity: 0;
  transform: translateY(20px);
}

.navigation ul li.active a .text {
  opacity: 1;
  transform: translateY(10px);
}

.indicator {
  position: absolute;
  top: -50%;
  width: 70px;
  height: 70px;
  background-color: aquamarine;
  border-radius: 50%;
  border: 6px solid black;
  transition: 0.5s;
}

.indicator::before {
  content: " ";
  position: absolute;
  top: 50%;
  left: -22px;
  width: 20px;
  height: 20px;
  background: transparent;
  border-top-right-radius: 20px;
  box-shadow: 0px -10px 0 0 var(--clr);
}

.indicator::after {
  content: " ";
  position: absolute;
  top: 50%;
  right: -22px;
  width: 20px;
  height: 20px;
  background: transparent;
  border-top-left-radius: 20px;
  box-shadow: 0px -10px 0 0 var(--clr);
}

.navigation ul li:nth-child(1).active~.indicator {
  transform: translateX(calc(70px *0));
}

.navigation ul li:nth-child(2).active~.indicator {
  transform: translateX(calc(70px *1));
}

.navigation ul li:nth-child(3).active~.indicator {
  transform: translateX(calc(70px *2));
}

.navigation ul li:nth-child(4).active~.indicator {
  transform: translateX(calc(70px *3));
}

.navigation ul li:nth-child(5).active~.indicator {
  transform: translateX(calc(70px *4));
}

/* Header */
.header {
  padding: 30px;
  text-align: center;
  background: white;
}

/* Main */
.main {
  float: left;
  width: 75%;
  padding: 20px;
  /* Background image for the destination */
  background-image: url("destination.jpg");
  background-size: cover;
  background-position: center;
  height: 500px;
}

/* Sidebar */
.sidebar {
  float: left;
  width: 25%;
  padding: 20px;
  background: white;
}

/* Footer */
.footer {
  padding: 20px;
  text-align: center;
  background: #ddd;
  margin-top: 20px;
}

iframe {
  min-height: 80vh;
  width: 70vw;
}

/* Responsive layout - when the screen is less than 800px wide, make the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 800px) {

  .main,
  .sidebar {
    width: 100%;
    padding: 0;
    height: 50vh;
  }
}