body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(skyblue, lightblue);
}

:root {
    --font-size: 6px;
}

.toggle {
    position: absolute;
    filter: opacity(0);
    width: 25em;
    height: 26em;
    font-size: var(--font-size);
    cursor: pointer;
    z-index: 2;
}

.umbrella *::before,
.umbrella *::after {
    content: '';
    position: absolute;
}

.umbrella,
.umbrella .canopy,
.umbrella .canopy::after {
    transition: 0.3s cubic-bezier(0.5, -0.25, 0.5, 1.25);
}

.umbrella {
    position: relative;
    width: 25em;
    height: 26em;
    font-size: var(--font-size);
    transform: rotate(-30deg);
}

.toggle:checked ~ .umbrella {
    transform: rotate(0deg);
}

.umbrella .canopy {
    position: absolute;
    width: inherit;
    height: 5.5em;
    top: 2.5em;
    transform-origin: top;
    transform: scale(0.08, 4);
}

.toggle:checked ~ .umbrella .canopy {
    transform: scale(1, 1);
}

.umbrella .canopy::before {
    width: inherit;
    height: 12.5em;
    background: rgb(100, 100, 100);
    border-radius: 12.5em 12.5em 0 0;
    transform: scaleY(0.4);
    top: -4em;
}

.umbrella .canopy::after {
    width: inherit;
    height: 1.5em;
    background-color: #333;
    top: 4em;
    border-radius: 50%;
    transform: scaleY(0);
}

.toggle:checked ~ .umbrella .canopy::after {
    transform: scaleY(1);
}

.umbrella .shaft {
    position: absolute;
    width: 0.8em;
    height: 18em;
    background-color: rgba(100, 100, 100, 0.7);
    top: 5.5em;
    left: calc((100% - 0.8em) / 2);
}

.umbrella .shaft::before {
    width: 6em;
    height: 3em;
    background-color: rgba(100, 100, 100, 0.7);
    left: calc((100% - 6em) / 2);
    top: -5.5em;
    border-radius: 6em 6em 0 0;
    transform: scaleX(0.1);
}

.umbrella .shaft::after {
    box-sizing: border-box;
    width: 4em;
    height: 2.5em;
    border: 1em solid #333;
    top: 100%;
    left: calc(50% - 4em + 1em / 2);
    border-radius: 0 0 2.5em 2.5em;
    border-top: none;
}