CSS file

*{
    margin: 0;
    padding: 0;

}
body {
    background-color: #233141;
    color: azure;
    flex-direction: column;
}
.header{
    font-size: 2rem;
    display: flex;
    justify-content: center;
    padding-bottom: 100px;
}
.container{
    max-width: 600px;
    margin-left: 29rem;
    border-bottom: 2px solid white;
    padding-bottom:17px ;
    cursor: pointer;
}
.question{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.question h3{
    font-size: 1.4rem;
}
.answer{
    max-height: 0;
    overflow: hidden;
    transition: max-height 1.4s ease-out; 
}
.answer p{
    padding-top: 16px;
    line-height: 1.4rem;
    font-size: 1.1rem;
}
.container.active .answer {
    max-height: 300px;
    animation: fade 0.7s ease-in;
}

.container.active span{
    transform: rotate(180deg);
}
span{
    transition: transform 1.0s ease-in;
}
@keyframes fade {
    from{
        opacity: 0;
        transform: translateY(-15px);
    }
    to{
       opacity: 1;
       transform: translateY(0px);
    }
}