html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
}

body {
    display: flex;
    background-color: black;
}

.o,
.x {
    flex: 1;
    min-height: 0;
    min-width: 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.o {
    line-height: 0;
}

.x-inner {
    display: flex;
    flex-direction: column;
    gap: 10vh;
    padding-top: 10vh;
    padding-bottom: 40vh;
    align-items: flex-start;
}

.chair {
    width: 100%;
    display: block;
}

.notchair {
    width: 70%;
    flex-shrink: 0;
    display: block;
}

.notchair:nth-child(1) {
    align-self: center;
}

.notchair:nth-child(2) {
    margin-left: 10%;
}

.notchair:nth-child(3) {
    margin-left: 20%;
}