body{background:#f5f7fb}.login-card{max-width:430px;margin-top:7vh}.student-photo{width:76px;height:76px;object-fit:cover;border-radius:50%;background:#ddd}.action-btn{min-height:76px;font-size:1.35rem}.qr-reader{max-width:520px;margin:auto}.card{border:0}.nav-pills .nav-link{white-space:nowrap}.table td{vertical-align:middle}@media(max-width:576px){.container{padding-left:12px;padding-right:12px}h1{font-size:1.6rem}}