* {
    margin: 0;
    padding: 0;
}

body{
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://external-content.duckduckgo.com/iu/?u=http%3A%2F%2Fwww.sgscuba.com.sg%2Fwp-content%2Fuploads%2F2015%2F10%2Fwind-map.jpg&f=1&nofb=1&ipt=0cf161c662fa7f8439686caedf3ffaca4ff10b3b48d73ce617e3e085ac1947ee&ipo=images') no-repeat;
    background-size: cover;
    background-color: black;
}
#center_col{
    margin: auto;
}
.navigation {
    height: 90px;
    background-color: rgb(56, 56, 165);
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.content {
    height: 90px;
    background-color: rgb(214, 214, 250);
}

.footer {
    height: 90px;
    background-color: rgb(89, 89, 203);
}

.nav-left {
    display: flex;
    font-size: 30px;
}

.nav-left ul {
    display: flex;
    font-size: 20px;
    align-items: center;
    margin: 0 40px;
}

.nav-left ul li {
    list-style: none;
    margin: 0 20px;
}

.nav-left ul li a {
    text-decoration: none;
    color: black;
}


.bar_links ul li ::after{
    content: '';
    width: 0%;          /* for hidden lines */
    height: 1.5px;
    background: #000;
    display: block;
    margin: auto;
    transition: 0.4s;
}

.bar_links ul li :hover::after{
    width: 100%;
}

.data-bar {
    display: flex;
    font-size: 20px;
    padding-top: 10px;
    padding-bottom: 10px;


    position: sticky;
    top: 0;
    background-color: rgb(214, 214, 250);
}

.data-bar ul {
    display: flex;
    align-items: center;
    font-size: 20px;
    margin: 0 0px;

}

.data-bar ul li {
    list-style: none; 
    margin: 0 20px;
    
}

.data-bar ul li a {
    text-decoration: none;
    color: black;
}

.heading{
    color: white;
}

.content{
    display: flex;
    justify-content: space-between;
}

.content-left{
    width: 43vw;
    /* height: 150vh; */
    display: flex;
    background-color: blue;
}

.content-right{
    width: 25vw;
    display: flex;
    background-color: green;
}