body{font-family:Arial}

#cat_exam{
height:100vh;
display:flex;
flex-direction:column;
}

.top-bar{
background:#1c2a44;
color:white;
display:flex;
justify-content:space-between;
padding:10px;
}

.legend span{
padding:5px 10px;
margin-right:5px;
color:white;
border-radius:3px;
font-size:12px;
}

.answered{background:#27ae60}
.notanswered{background:#e74c3c}
.review{background:#9b59b6}
.notvisited{background:#bdc3c7;color:black}

.exam-body{
flex:1;
display:flex;
}

.left-area{
flex:3;
padding:20px;
}

.right-area{
flex:1;
background:#f2f2f2;
padding:10px;
}

#palette li{
list-style:none;
display:inline-block;
width:35px;
height:35px;
margin:4px;
line-height:35px;
text-align:center;
background:#ccc;
cursor:pointer;
}

.hidden{display:none}

#calculator{
position:fixed;
bottom:20px;
right:20px;
background:white;
border:1px solid #ccc;
padding:10px;
}

#instruction_screen{
position:fixed;
top:0;
left:0;
right:0;
bottom:0;
background:white;
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
z-index:999;
}