.answer-box{
    max-width:700px;
    margin:auto;
    padding:25px;
    background:#ffffff;
    border-radius:10px;
    box-shadow:0 4px 10px rgba(0,0,0,0.1);
    font-family:Arial, sans-serif;
    line-height:1.8;
}

.heading{
    text-align:center;
    color:#0d47a1;
    margin-bottom:20px;
}

.formula{
    background:#eef4ff;
    padding:10px;
    border-left:4px solid #0d47a1;
    font-weight:bold;
}

.result{
    text-align:center;
    color:green;
    margin-top:25px;
    font-size:24px;
}

/* q 3*/
table{
    width:100%;
    border-collapse:collapse;
}

th{
    background:#0d47a1;
    color:white;
    padding:12px;
    font-size:18px;
}

td{
    border:1px solid #ccc;
    padding:12px;
    font-size:17px;
    color:#333;
}

tr:nth-child(even){
    background:#f2f6ff;
}


/* q 5 */
.formula{
    background:#eef4ff;
    padding:12px;
    border-left:5px solid #0d47a1;
    margin:15px 0;
    overflow-x:auto;
}

.final{
    background:#dff0d8;
    padding:15px;
    border-radius:8px;
    margin-top:15px;
    font-weight:bold;
}

/*images*/
.graph-image{
    width:100%;
    max-width:900px;
    display:block;
    margin:30px auto;
    border-radius:12px;
    box-shadow:0 6px 18px rgba(0,0,0,0.15);
    border:3px solid #0d47a1;
    background:#fff;
    padding:10px;
}

.graph-container{
    text-align:center;
    margin-top:30px;
}

.graph-title{
    font-size:28px;
    color:#0d47a1;
    font-weight:bold;
    margin-bottom:20px;
}

@media(max-width:768px){

    .graph-title{
        font-size:20px;
    }

    .graph-image{
        border-radius:8px;
        padding:5px;
    }

}