footer {
    display: flex;
    width: 100%;
    height: calc(200 / 480 * 100%);
}

/* left */
.footer_walkbutton {
    height: 100%;
    width: calc(200 / 920 * 100%);
}

.footer_walkbutton_div {
    width: 100%;
    height: 100%;
}

.footer_walkbutton_div_top {
    display: flex;
    justify-content: center;
    align-items: end;
    width: 100%;
    height: 35%;
}

.footer_walkbutton_div_mid {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 30%;
}

.footer_walkbutton_div_bottom {
    display: flex;
    justify-content: center;
    align-items: top;
    width: 100%;
    height: 35%;
}

/* mid */
.footer_resetbutton {
    height: 100%;
    width: calc(520 / 920 * 100%);
}

.footer_resetbutton_div {
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: end;
    width: 100%;
    height: 100%;
}

/* right */
.footer_attackbutton {
    height: 100%;
    width: calc(200 / 920 * 100%);
}

.footer_attackbutton_div {
    width: 100%;
    height: 100%;
}

.footer_attackbutton_div_top {
    display: flex;
    align-items: end;
    width: 100%;
    height: 50%;
}

.footer_attackbutton_div_bottom {
    display: flex;
    justify-content: center;
    align-items: top;
    width: 100%;
    height: 50%;
}