*{
    margin:0px;
    padding:0px;
    box-sizing:border-box;
    font-family:'poppins','sans-serif';
}
html,body{
    height:100%;
    overflow-x:hidden;
}
body{
    background-color:#001e4d;
    padding-inline:20px;
    min-height:100%;
}
.app{   
    max-width:500px;
    background-color:white;
    margin-inline:auto;
    padding:30px; 
    color:#001e4d;
    margin-top:100px;
    border-radius:10px; 
}
.app h2{ 
    font-size:28px;
    border-bottom: 1px solid black;
    padding-bottom:8px;     
}
.app h3{
    font-size:20px;
    margin:28px 0px 0px;
}
.current-quetion-parent{
    display:none;
    position:relative;
    left:90%;
    top:0px;
    color:black;
}

.btn{
    display:block;
    background-color:#fff;
    color:#222;
    padding:10px;
    width:100%;
    text-align:start;
    margin-bottom:12px;
    border:1px solid black;
    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{
    display:none;
    padding:10px 60px;
    border-radius:4px;
    border:none;
    color:white;
    margin-inline:auto;
    background-color:#001e4d;
}
.right-ans{
    background-color: rgba(14, 234, 102, 0.67);
    transition:background-color 0.5s ease-out 0.2s;
}
.wrong-ans{
    background-color: rgba(247, 40, 40, 0.67);
    transition:background-color 0.5s ease-out;
}
.score-parent{
    margin-top:20px;
}
.show-score{
    color:#001e4d;
    font-size:30px;
}
.play-btn{
    display:block;
    margin-top:20px;
    padding:10px 20px;
    border-radius:4px;
    border:none;
    color:white;
    margin-inline:auto;
    background-color:#001e4d;
}