style.css

body {
    font-family: 'Roboto', sans-serif;
    font-weight: 400;
}

.container {
    width: 500px;
    margin: 50px auto;
}

.accordions {
    border-radius: 8px;
    overflow: hidden;
    font-size: 1.2em;
}

.accordion {
    width: 100%;
    color: white;
    overflow: hidden;
}

.acc-label {
    display: flex;
    justify-content: space-between;
    padding: 1em;
    background-color: #c72aee;
    font-weight: 500;
    cursor: pointer;
}

.accordion:first-child {
    border-bottom: 1px solid;
}

.acc-label:hover {
    background-color: #9e1caf;
}

.acc-label::after {
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    content: "\f107";
    width: 1em;
    height: 1em;
    text-align: center;
    transition: all 0.4s ease;
}

.acc-content {
    max-height: 0;
    padding: 0 1em;
    color: aliceblue;
    background-color: #cc85e7;
    transition: all 0.4s ease;
}

input {
    position: absolute;
    opacity: 0;
    z-index: -1;
}

input:checked+.acc-label::after {
    transform: rotate(-90deg);
}

input:checked~.acc-content {
    max-height: 100vh;
    padding: 1em;
}