body{
margin:0;
font-family: Arial;
background: linear-gradient(to right, #0f766e, #065f46);
}

.container{
display:flex;
height:100vh;
}

.left{
width:45%;
color:white;
text-align:center;
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
}

.siswa3d{
width:280px;
margin-bottom:10px;
}

.right{
width:55%;
background:white;
padding:40px;
display:flex;
flex-direction:column;
justify-content:center;
}

select, input, button{
width:100%;
padding:10px;
margin:8px 0;
border-radius:8px;
border:1px solid #ccc;
}

button{
background:#065f46;
color:white;
border:none;
font-weight:bold;
}

.demo-box{
background:#f0fdfa;
border:1px solid #99f6e4;
padding:10px;
border-radius:10px;
margin-bottom:10px;
}

footer{
text-align:center;
font-size:12px;
margin-top:20px;
}