#main-bg{
    position: fixed;
    top: 0px;
    left: 0px;
    right: 0px;
    bottom: 0px;
    overflow: hidden;
}
#main-bg:not(.height-base) > img{
    width: 100vw
}

#main-bg.height-base > img{
    height: 100vh
}

#blur-bg{
    position: absolute;
    filter: blur(10px) brightness(80%);
}

#blur-bg:not(.height-base) > img{
    width: 100vw
}

#blur-bg.height-base > img{
    height: 100vh
}

#main-content{
    position: relative;
    color: white;
}

.login-box{
    float: none;
    margin: auto;
    padding: 20px;
    overflow: hidden;
    background: rgba(0,0,0,.5);
    margin-top: 100px;
    border-radius: 10px;
}

.form-group > label{
    font-weight: 400;
}

.input-group > .form-control, .input-group-addon{
    background: rgba(0,0,0,.2);
    color: white;
    border: 1px solid rgba(255,255,255,.2)
}

.input-group.username .form-control{
    border-bottom-right-radius: 0px;
    border-bottom: none;
    height:40px;
}

.input-group.username .input-group-addon{
    border-bottom-left-radius: 0px;
    border-bottom: none;
}

.input-group.password .form-control{
    border-top-right-radius: 0px;
    height:40px;
}

.input-group.password .input-group-addon{
    border-top-left-radius: 0px;
}