* {
    padding: 0; 
    margin: 0;
    box-sizing: border-box;
    font-family: "Segeo UI", sans-serif;
}

body { 
    min-height:         100vh;
    overflow-x:          hidden; 
    color:              #444;
    letter-spacing:     .25px;
}

section {
   max-width:           950px;
   width:                   100%;
   padding:               3em;
   margin:                 0 auto;
}
section h2 { 
    font-size:              30px;
    margin-bottom:    30px;
    color:               #333;
}

p {
    line-height:           1.5;
    margin-top:           8px;
    border-radius:       5px;
    padding:               15px 20px;
    border:                  .1em solid #eee;
}
summary, p { font-size: 18px; }

details summary {
    position: relative;
    color: #444;
    padding: 15px 20px;
    border-radius: 5px;
    background-color: #fcfcfc;
    border: .1em solid #eee;
    letter-spacing: .25px;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
details[open] summary {
    color: rgb(79, 82, 255);
}
details:not(:last-child) {
    margin-bottom: 15px;
}
details summary span {
    height: 28px; width: 28px;
    font-size: 24px;
    line-height: 28px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #444;
    transition: .2s ease;
    color: #fff;
}
details[open] summary span  {
    background-color: rgb(79, 82, 255);
}
details summary span::after {
    content: "+";
}
details[open] summary span::after {
    content: "-";
}


/*  RESPONSIVE  */


@media (max-width: 768px) {
    section {
        padding: 2em 1em;
    } 
}

@media (max-width: 450px) {
   
    summary, p { font-size: 16px; }
}