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

#sample{
    --wreath-color: #55aa55;
    --bell-color: #ffff55;
    --background-color: #333;

    min-width: 300px;
    height: 300px;
    background-color: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;

    position: relative;
    padding: 50px;
}

/* リース */
/* リースの外側 */
.wreath {
    background-color: var(--wreath-color);
    height: 100%;
    width: 100%;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* リースの内側 */
.wreath::after {
    content: "";
    background-color: var(--background-color);
    height: 50%;
    width: 50%;
    border-radius: 50%;
}

/* ベル */
.bell {
    position: absolute;
    top: 30px;
    width: 100px;
}

.bell-casting {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.bell-casting-item {
    z-index: 1;
    background-color: var(--bell-color);
}

/* 部品1 */
.bell-casting-t {
    width: 70px;
    height: 30px;
    border-radius: 50% / 100% 100% 0% 0%;
}

/* 部品2、部品3 */
.bell-casting-l,
.bell-casting-r {
    position: relative;
    width: 35px;
    height: 60px;
    --bell-side-width: 15px;
}

.bell-casting-l::before,
.bell-casting-r::before {
    position: absolute;
    content: "";
    background-color: var(--bell-color);
    height: 30px;
    width: var(--bell-side-width);
    bottom: 0;
}

.bell-casting-l::before {
    left: calc(var(--bell-side-width) * -1);
}

.bell-casting-r::before {
    right: calc(var(--bell-side-width) * -1);
}

.bell-casting-l::after,
.bell-casting-r::after {
    position: absolute;
    content: "";
    background-color: var(--wreath-color);
    height: 30px;
    width: var(--bell-side-width);
    bottom: 0;
}

.bell-casting-l::after {
    border-radius: 0% 0% 100%;
    left: calc(var(--bell-side-width) * -1);
}

.bell-casting-r::after {
    border-radius: 0% 0% 0% 100%;
    right: calc(var(--bell-side-width) * -1);
}

/* 部品4 */
.bell-casting-b {
    width: 100%;
    height: 10px;
    border-radius: 50% / 0 0 100% 100%;
}

/* 部品5 */
.bell-clapper {
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
}

.bell-clapper-item {
    width: 30px;
    height: 110px;
    background-color: #aaaa55;
    border-radius: 0% 0% 50% 50%;

    animation-name: shake-bell-clapper;
    animation-duration: 3s;
    animation-iteration-count: infinite;
    transform-origin: left top;
    transform-origin: 50% 0;
}

@keyframes shake-bell-clapper {
    0% {
        transform: rotate(10deg);
    }

    50% {
        transform: rotate(-10deg);
    }

    100% {
        transform: rotate(10deg);
    }
}

/* 飾り */
.decoration-item-1,
.decoration-item-2 {
    position: absolute;
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

.decoration-item-1 {
    background-color: #ff5555;
}

.decoration-item-2 {
    background-color: #ff7755;
}

.decoration-1 {
    top: 90px;
    left: 90px;
}

.decoration-2 {
    top: 180px;
    left: 50px;
}

.decoration-3 {
    top: 290px;
    left: 100px;
}

.decoration-4 {
    top: 180px;
    right: 50px;
}

.decoration-5 {
    top: 290px;
    right: 100px;
}

.decoration-6 {
    top: 90px;
    right: 90px;
}

.decoration-7 {
    top: 150px;
    left: 105px;
}

.decoration-8 {
    top: 230px;
    left: 105px;
}

.decoration-9 {
    top: 275px;
    left: 185px;
}

.decoration-10 {
    top: 230px;
    right: 105px;
}

.decoration-11 {
    top: 150px;
    right: 105px;
}