.login-box{ 
    position: absolute; 
    top: 310px; 
    left: 200px; 
    z-index: 99; 
}
.login-box .login-btn{ 
    border-radius: 6px; 
    background: rgba(255, 255, 255, 0.79); 
    color: #005bab; 
    font-size: 18px; 
    height: 42px; 
    line-height: 42px; 
    display: inline-block; 
    padding: 0 30px; 
    letter-spacing: 1px; 
}