accordion.css

.Accordion {
    border: 1px solid hsl(0, 0%, 82%);
    border-radius: .3em;
    box-shadow: 0 1px 2px hsl(0, 0%, 82%);
}

.Accordion > * + * {
    border-top: 1px solid hsl(0, 0%, 82%);
}

.Accordion-trigger {
    background: none;
    border: 0;
    color: hsl(0, 0%, 13%);
    display: block;
    font-size: 1rem;
    font-weight: normal;
    margin: 0 0 -3px 0;
    padding: 0;
    position: relative;
    text-align: left;
    width: 100%;
}

.Accordion dt:first-child .Accordion-trigger {
    border-radius: .3em .3em 0 0;
}

.Accordion-trigger:focus,
.Accordion-trigger:hover {
    background: hsl(35, 84%, 62%);
}

.Accordion-title {
  display: block; /* For Edge bug https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/8295099/ */
  pointer-events: none;
}

.Accordion-title img {
    max-width: 100%;
}

.Accordion-icon {
    border: solid hsl(23, 70%, 46%);
    border-width: 0 2px 2px 0;
    height: 2.5rem;
    pointer-events: none;
    position: absolute;
    right: 1.5em;
    top: 50%;
    transform: translateY(-60%) rotate(45deg);
    width: 2.5rem;
}

.Accordion-trigger:focus .Accordion-icon,
.Accordion-trigger:hover .Accordion-icon {
    border-color: hsl(50, 81%, 94%);
}

.Accordion-trigger[aria-expanded="true"] .Accordion-icon {
    transform: translateY(-50%) rotate(-135deg);
}

.Accordion-panel {
    margin: 0;
    padding: 1em 1.5em;
}

/* For Edge bug https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/4806035/ */
.Accordion-panel[hidden] {
  display: none;
}

fieldset {
    border: 0;
    margin: 0;
    padding: 0;
}

input {
    border: 1px solid hsl(0, 0%, 62%);
    border-radius: .3em;
    display: block;
    font-size: inherit;
    padding: .3em .5em;
}