html,body{ width: 100%; height: 100%; }
.login-bg{ position: relative; left: 0; top: 0; width: 100%; height: 100%; min-width: 1200px; background: url("../images/login-bg.png") no-repeat center center; background-size: cover; }
.login-box{ width: 460px; padding: 20px; border-radius: 8px; opacity: .7; background: rgba(255,255,255,0.7); position: absolute; top: 50%; left: 50%; margin-top: -150px; margin-left: -250px; }
.login-title{ margin-bottom: 20px; border-bottom: 1px solid #ccc; padding: 0 20px 20px 20px; }
.login-title .logo{ height: 60px; text-align: center; }
.login-title .logo img{ height: 100%; }