[style]
/* Back button for linking to personal site */
#back-btn {
position: absolute;
left: 1rem;
top: 0.9rem;
width: 40px;
height: 40px;
display: inline-flex;
align-items: center;
justify-content: center;
border-radius: 50%;
background: rgba(0,0,0,0.5);
color: #fff;
text-decoration: none;
z-index: 1200;
box-shadow: 0 6px 14px rgba(0,0,0,0.4);
}
#back-btn:hover { transform: translateY(-2px); }
[endstyle]