*,
*:before,
*:after {
    margin: 0;
    padding: 0;
    box-sizing: inherit;
    font-size: inherit;
    font-family: inherit;
}

html {
    box-sizing: border-box;
    font-size: 62.5%;
    font-family: Verdana, Helvetica, sans-serif;
}

body {
    background: hsl(206, 13%, 11%);
    padding: 2rem;
    color: hsl(0, 0%, 100%);
}

ul,
li {
    list-style: none;
}

a {
    text-decoration: none;
}

.accordion {
    width: 100%;
    max-width: 96rem;
    margin: 0 auto;
}

.accordion li {
    margin-bottom: 1rem;
    border-radius: .6rem;
}

.accordion-button {
    position: relative;
    display: block;
    width: 100%;
    height: 4rem;
    border: 0;
    outline: 0;
    display: flex;
    align-items: center;
    background: hsl(212, 15%, 22%);
    text-align: left;
    padding: 1rem 2rem;
    border-radius: .6rem;
    font-size: 1.6rem;
    color: hsl(0, 0%, 100%);
    cursor: pointer;
    transition: border-radius .5s ease;
}

.accordion-button.active {
    background: hsl(212, 15%, 22%);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    transition: border-radius .2s ease;
}

.caret {
    position: absolute;
    top: 50%;
    right: 2rem;
    margin-top: -1rem;
    width: 2rem;
    height: 2rem;
    background: hsl(212, 8%, 41%);
    border-radius: .4rem;
    font-size: 1.4rem;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.caret i {
    transform: rotate(0deg);
    transition: transform .2s ease;
}

.caret.active {
    background: hsl(214, 94%, 49%);
}

.caret.active i {
    transform: rotate(180deg);
    transition: transform .2s ease;
}

.accordion-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height .2s ease;
}

.accordion-panel-content {
    padding: 2rem;
    background: hsl(212, 15%, 22%);
    border-bottom-left-radius: .6rem;
    border-bottom-right-radius: .6rem;
    font-size: 1.6rem;
}