body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ship {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
}

.ship.vertical {
    flex-direction: column;
}

.ship span {
    width: 40px;
    height: 40px;
    background-color: orange;
}

.ship .head {
    border-radius: 20px 0 0 20px;
}

.ship .tail {
    border-radius: 0 10px 10px 0;
}

.ship.vertical .head {
    border-radius: 20px 20px 0 0;
}

.ship.vertical .tail {
    border-radius: 0 0 10px 10px;
}