body{
    background-color: black;
    background-repeat: no-repeat;
    background-size: cover;
}

#sijalica{
     
    width: 15%;
    display: flex;
    margin-top: 10%;
    margin-left: 45%;
    
    
}

#dugme{
    margin-top: 5%;
    margin-left: 45%;
    background-color: red;
    border-radius: 15%;
    border-color: black;
    width: 15%;
    height: 15vh;
    

}
#back-link{
    color: white;
    text-decoration: none;
    margin-top: 5%;
    margin-left: 45%;
    display: block;
}