*{
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    box-sizing: border-box;
}
body{
    text-align: center;
    background-color: black;
}
.box{
    border: 2px solid rgb(220, 217, 217);
    width: 800px;
    height: 600px;
    text-align: center;
    background-color: #fff;
   margin:100px auto 0;
    border-radius: 10px;
    padding: 30px;
}
p{
    opacity: 0.5;
margin: 10px;
}
h1{
color: rgb(55, 167, 204);
margin: 10px;
}

input{
    width: 400px;
    height: 30px;
    margin: 10px;
}
.button1{
    background-color: rgb(55, 167, 204); 
    width: 100px;
    height: 30px;
    margin: 10px;
    cursor: pointer;
    color: white;
    border:none;
}
.button1:hover {
    background-color: rgb(55, 167, 204);
  }
.button2{
    border:2px solid  rgb(55, 167, 204);
    background-color: rgb(183, 230, 245); ;
    width: 300px;
    height: 50px;
    opacity: 0.5;
    margin: 10px;
    cursor: pointer;
}
.button2:hover{
    background-color:rgb(55, 167, 204);
    color: black;
    opacity: 1;
  }

  .app{
    background-color: #fff;
    width:90%;
    max-width: 600px;
    margin:100px auto 0;
    border-radius: 10px;
    padding: 30px;
    
}
.app h1{
    font-size: 25px;
    color: #001e4d;
    font-weight: 600;
    border-bottom:1px solid #333;
    padding-bottom: 30px;
}
.quiz{
padding: 20px 0;

}
.quiz h2{
    font-size: 18px;
    color:001e4d;
    font-weight: 600;
}
.btn{
    background-color: #fff;
    color:#222;
    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-color: #222;
    color: #fff;
   
}
.btn:disabled{
    cursor: no-drop;
}
#next-btn{
    background-color: #001e4d;
    color: #fff;
    font-weight: 500;
    width: 150px;
    border:0;
    padding: 10px;
    margin: 20px auto 0;
    border-radius: 4px;
    cursor: pointer;
    display: none;
}
#next-btn2{
    background-color: #001e4d;
    color: #fff;
    font-weight: 500;
    width: 150px;
    border:0;
    padding: 10px;
    margin: 20px auto 0;
    border-radius: 4px;
    cursor: pointer;
    display: none;
}
.correct{
    background-color: #9aeabc;

}
.incorrect{
    background-color: #ff9393;
}
  

header{
    margin:30px;
   
     display: flex;
     justify-content:space-between;
     }
     .btn-header{
        background-color: #fff;
        color:#2b8ec7;
        height: 40px;
        font-weight: 500;
        font-size: 20px;
        width: 100%;
        border: 2px solid#0c0fb3;
        padding: 10px;
        margin: 10px 0;
        text-align: left;
        border-radius: 50px;
        
     }