style.css

body, html {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    overflow: hidden;
}
#container {
    width: 100%;
    height: 100%;
    background-image: linear-gradient(hsl(273, 75%, 66%), hsl(240, 73%, 65%));
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
}
#accordian {
    width: 1000px;
    height: 600px;
    background-color: white;
    border-radius: 25px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

#imgContainer {
    width: 50%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background-image: url('images/bg-pattern-desktop.svg');
    background-size: 957px 1010px;
    background-position: -565px -330px;
    background-repeat: no-repeat;
}
#FAQContainer {
    width: 50%;
    height: 100%;
    position: absolute;
    right: 0;
    top: 0;
    font-family: 'Kumbh Sans', sans-serif;
    padding-top: 50px;
}

#FAQContainer p {
    color: hsl(240, 6%, 50%);
    font-size: 18px;
}
#FAQContainer h1 {
    color: hsl(238, 29%, 16%);
}

#imgContainer img {
    position: absolute;
    left: -110px;
    top: 63px;
    width: 500px;
}

.selection {
    margin-right: 100px;
    border-bottom: 1px solid hsl(240, 5%, 91%);
    cursor: pointer;
}

.selection img {
    float: right;
    margin-top: 20px;
}
.description {
    margin: 5px 0;
    line-height: 24px;
    animation: height 2s;
    overflow: hidden;
}
.gone {
    height: 0px;
    margin: 0;
}
.option {
    display: inline-block;
}

.active {
    color: hsl(240, 37%, 45%);
    font-weight: 700;
}
@media only screen and (max-width: 375px) {
    #accordian {
        width: 90%;
        overflow: visible;
        height: 75%;
    }
    #FAQContainer {
        width: 90%;
        height: inherit;
        padding: 5%;
        overflow: visible;
        margin-top: 80px;
        overflow-x: hidden;
        overflow-y: scroll;
    }
}
@media only screen and (max-width: 375px) {
    .selection {
        margin: 0 auto;
    }
    #FAQContainer h1 {
        text-align: center;
    }
    #FAQContainer p {
        font-size: 15px;
    }
    .option {
        padding: 20px 0;
        margin: 0;
        font-size: 16px;
    }
    #imgContainer {
        width: 100%;
        left: 0;
        right: 0;
        background-size: 230px 250px;
        background-position: 50px -150px;
    }
    #imgContainer img {
        position: absolute;
        top: -100px;
        left: 0;
        right: 0;
        margin: 0 auto;
        width: 230px;
    }
    #accordian {
        position: relative;
        top: 50px;
    }
}