#main_location {position: fixed; width:110px; top: 50%; right: 0; z-index: 9; transform: translateY(-50%);}

#main_location ul {position: relative;}
#main_location ul li {margin-bottom: 40px; position: relative; z-index: 2; transition: all 0.3s;}
#main_location ul li:last-child {margin-bottom:0;}
#main_location ul li a { text-align: center; opacity: 0.5; display: flex; flex-direction: column; align-items: center;}
#main_location ul li a::before {display: block; content: ""; width: 5px; height: 5px; border-radius: 50%; background: #fff; margin-bottom: 3px; transition: all 0.5s;}
#main_location ul li a::after {display: block; content: "01"; color:#fff; font-size:12px; transition: all 0.3s; }

/* 기존 */
#main_location ul li a.default_location { opacity: 1; }
#main_location ul li a.default_location::before { background: #999; }
#main_location ul li a.default_location::after { color: rgba(0,0,0,0.5); font-weight: 300; }


/* active */
#main_location ul li a.active_location { opacity: 1; }
#main_location ul li a.active_location2 {opacity: 1; }

#main_location ul li a.active_location::before { width: 5px; height: 5px; background:#287fd7; }
#main_location ul li a.active_location2::before {width: 5px; height: 5px; }

#main_location ul li a.active_location::after {  color: #287fd7; }
#main_location ul li a.active_location2::after {content: "Main"; color:#fff; }



#main_location ul li:nth-child(1) a::after {content: "01";}
#main_location ul li:nth-child(2) a::after {content: "02";}
#main_location ul li:nth-child(3) a::after {content: "03";}
#main_location ul li:nth-child(4) a::after {content: "04";}
#main_location ul li:nth-child(5) a::after {content: "05";}

#main_location ul li:nth-child(1) a.active_location2::after {content: "Main";}
#main_location ul li:nth-child(2) a.active_location::after {content: "Achievements";}
#main_location ul li:nth-child(3) a.active_location2::after {content: "About Our Lab";}
#main_location ul li:nth-child(4) a.active_location::after {content: "News";}
#main_location ul li:nth-child(5) a.active_location2::after {content: "Contact Us";}