body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: black;
}

.sapling {
    width: 5em;
    height: 17.5em;
    font-size: 10px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.branch {
    position: absolute;
    width: 0.2em;
    height: inherit;
    background-color: burlywood;
    border-radius: 25%;
    transform-origin: bottom;
}

.leaves {
    position: absolute;
    width: inherit;
    height: 80%;
    display: flex;
    flex-direction: column-reverse;
}

.leaves span {
    width: 2.5em;
    height: 2.5em;
    background-color: limegreen;
}

.leaves span:nth-child(odd) {
    align-self: flex-start;
    border-top-right-radius: 3em;
    border-bottom-left-radius: 3em;
    transform-origin: right bottom;
}

.leaves span:nth-child(even) {
    align-self: flex-end;
    border-top-left-radius: 3em;
    border-bottom-right-radius: 3em;
    transform-origin: left bottom;
}