.bg {
    background: url(/pict/bg/1.png)no-repeat;
    background-size: cover; 
    background-position: 50% 0px; 
    width: 100vw;
    height: 100vh;
    position: fixed;
    left: 0px;
    top: 0px; 
    z-index: -100;
} 

.cont { 
    padding-top: 100px; 
    padding-bottom: 50px; 
} 

.round { 
    border-radius:10px !important; 
}