body{
font-family: Arial, sans-serif;
background:#f6f6f6;
margin:0;
}

.container{
max-width:900px;
margin:auto;
padding:20px;
}

.site-header{
background:#111;
color:white;
}

.logo a{
color:white;
font-size:22px;
text-decoration:none;
font-weight:bold;
}

.menu ul{
list-style:none;
display:flex;
gap:20px;
padding:0;
}

.menu a{
color:white;
text-decoration:none;
}

.calculator-box{

background:white;
padding:20px;
margin-top:20px;
border-radius:8px;
}

input{
width:100%;
padding:10px;
margin:10px 0;
}

button{

background:#0073e6;
color:white;
border:none;
padding:12px 20px;
cursor:pointer;
font-size:16px;
}

button:hover{
background:#005bb5;
}

.result-box{

background:white;
padding:20px;
margin-top:20px;
border-radius:8px;
text-align:center;

}

.result-box p{
font-size:28px;
font-weight:bold;
}

.site-footer{
margin-top:40px;
background:#111;
color:white;
text-align:center;
padding:20px;
}