body {
    background-color: #fff;
    margin: auto;
}

.a {
    background-color: #896055;
    position:  absolute;
    width: 9vh;
    height: 7.5vh;
    top: 4vh;
    border-radius: 1vh;
}

.b {
    background-color: #896055;
    position:  absolute;
    width: 7.5vh;
    height: 19vh;
    left: 5vh;
    top: 0vh;
    border-radius: 1vh;
}

.c {
    background-color: #896055;
    position:  absolute;
    width: 15vh;
    height: 7.5vh;
    left: 15.5vh;
    top: 4vh;
    border-radius: 1vh;
}

.d {
    background-color: #896055;
    position:  absolute;
    width: 7.5vh;
    height: 7vh;
    left: 5vh;
    top: 14vh;
    border-radius: 50%;
}

.e {
    background-color: #896055;
    position:  absolute;
    width: 20vh;
    height: 7vh;
    left: 7.5vh;
    top: 14vh;
    border-radius: 1vh;
}

.f {
    background-color: #896055;
    position:  absolute;
    width: 7.5vh;
    height: 7.5vh;
    left: 23vh;
    top: 14vh;
    border-radius: 50%;
}

.g {
    background-color: #896055;
    position:  absolute;
    width: 7.5vh;
    height: 13vh;
    left: 23vh;
    top: 17vh;
    border-radius: 1vh;
}

.edge-1 {
    background-color: #896055;
    position:  absolute;
    width: 1vh;
    height: 1vh;
    left: 12vh;
    top: 13vh;
}

.edge-2 {
    background-color: #fff;
    position:  absolute;
    width: 1vh;
    height: 1vh;
    left: 12.5vh;
    top: 13vh;
    border-radius: 0  0 0 100%;
}

.edge-3 {
    background-color: #896055;
    position:  absolute;
    width: 1vh;
    height: 1vh;
    left: 22vh;
    top: 21vh;
}

.edge-4 {
    background-color: #fff;
    position:  absolute;
    width: 1vh;
    height: 1vh;
    left: 22vh;
    top: 21vh;
    border-radius: 0 100% 0 0;
}