*{
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
    box-sizing: border-box;
}
body{
    background-image: linear-gradient(to right bottom, #1f242d, #0d1a20);
}
.app{
    background: #cac8dc;
    width: 99%;
    max-width: 600px;
    margin: 100px auto 0;
    border-radius: 10px;
    padding: 30px;
}
.app h1{
    font-weight: 25px;
    color:#060372;
    padding-bottom: 30px;
    font-weight: 600;
    border-bottom: 1px solid #333;

}
.quiz{
    padding: 20px 0;
}
.quiz h2{
    font-size: 18px;
    color: #ee2b2b;
    font-weight: 600;
}
.btn{
    background: #b1eeeb;
    color:#0d1a20;
    font-weight: 500;
    width: 100%;
    border: 1px solid #222;
    padding: 10px;
    margin: 10px 0;
    text-align: left;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}
.btn:hover:not([disabled]){
    background: #474646;
    color:#fff;
}
.btn:disabled{
    cursor: no-drop;
}
#next-btn{
    background: #0d1a20;
    color: #fff;
    font-weight: 500;
    width:150px;
    align-items: center;
    border:0;
    padding: 10px;
    margin:20px auto 0;
    border-radius: 4px;
    cursor: pointer;
    display: block;
    display: none;
}
.correct{
    background: #07ff3d;
}
.incorrect{
    background: #f21414;
}

.social a{ display:inline-flex;
    justify-content:center;
  align-items:center;  
  width: 40px;
  height:40px;
  background:transparent;
  border: 2px solid #FFB800;
  border-radius:40%;
  font-size:20px;
  color:#FFB800;
  text-decoration:none;
  margin: 50px 30px 15px 5px;
  }
      
  .social a:hover{ background:#FFB800;
      color:#1f242d;
      box-shadow:0 0 20px #FFB800;	
      }