style.css

*{
box-sizing: border-box;    
}

body{
background-color: blanchedalmond;
height: 100vh;
display: flex;
justify-content: center;
align-items: center;    
}

.accordio{
width: 65%;
background-color: white;
padding: 2em;
border-radius: 1.56em;    
}

.accordio .accordio-title{
margin-bottom: 1em;
text-align: center;    
}

.accordio .container .questions{
padding: 1em 0;
font-size: 22.4px;
cursor: pointer;
border-bottom: 1px solid black;

position: relative;
}

.accordio .container .questions::after{
content: '+';
position: absolute;
right: -5px;    
}

.accordio .container .answer{
padding-top: 15px;
font-size: 22px;
line-height: 1.5;
width: 100%;


height: 0px;
overflow: hidden;
transition: .5s;
}



/* Javascript link */

.accordio .container.active .answer{
height: 120px;

}

.accordio .container.active .questions{
font-size: 18px;
transition: .5s;

}

.accordio .container.active .questions::after{
    content: '-';
    font-size: 30px;
    transition: .5s;
}