body {
    margin: 0;
    margin-top: 100px;
}
.header-div {
    background-color: black;
    border-bottom: 1px solid rgba(0, 0, 255, 0.768);
}
.f-section {
    position: relative;
    margin-top: 10px;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    border-bottom-style: solid;
   border-bottom-width: 10px;
   border-bottom-color: rgb(52, 136, 205);
};

.ship-div {
    width: 100px;
    height: 100px;
}
.ship {
    height: 100px;
    position: absolute;
    bottom: -15px;
    right: 100%;
    z-index: -3;
    animation: ShipMove 10s linear infinite;
}
@keyframes ShipMove {
    from {
        right: 0px;
    }
    to {
        right : 100%;
    }

}