:root {
  --color-primary: #0073ff;
  --color-white: #e9e9e9;
  --color-black: #141d28;
  --color-black-1: #212b38;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: sans-serif;

}


.menu-bar {
  background-color: var(--color-black);
  height: 40px;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 5%;

  position: relative;
}

.menu-bar ul {
  list-style: none;
  display: flex;
}

.menu-bar ul li {
  /* width: 120px; */
  padding: 5px 30px;
  /* text-align: center; */

  position: relative;
}

.menu-bar ul li a {
  font-size: 20px;
  color: var(--color-white);
  text-decoration: none;

  transition: all 0.3s;
}

.menu-bar ul li a:hover {
  color: var(--color-primary);
}

.fas {
  float: right;
  margin-left: 1px;
  padding-top: 3px;
}

/* dropdown menu style */
.dropdown-menu {
  display: none;
}

.menu-bar ul li:hover .dropdown-menu {
  display: block;
  position: absolute;
  left: 0;
  top: 100%;
  background-color: var(--color-black);
}

.menu-bar ul li:hover .dropdown-menu ul {
  display: block;
  margin: 10px;
}

.menu-bar ul li:hover .dropdown-menu ul li {
  width: 50px;
  padding: 10px;
}

.dropdown-menu-1 {
  display: none;
}

.dropdown-menu ul li:hover .dropdown-menu-1 {
  display: block;
  position: absolute;
  left: 150px;
  top: 0;
  background-color: var(--color-black);
}


#button {
  display: inline-block;
  background-color: #FF9800;
  width: 50px;
  height: 50px;
  text-align: center;
  border-radius: 4px;
  position: fixed;
  bottom: 30px;
  right: 30px;
  transition: background-color .3s, 
    opacity .5s, visibility .5s;
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
}
#button::after {
  content: "\f077";
  font-family: FontAwesome;
  font-weight: normal;
  font-style: normal;
  font-size: 2em;
  line-height: 50px;
  color: #fff;
}
#button:hover {
  cursor: pointer;
  background-color: #333;
}
#button:active {
  background-color: #555;
}
#button.show {
  opacity: 1;
  visibility: visible;
}