body{
    margin: 0 !important;
    background-color: rgb(99, 97, 97);
    background-image: url(glowne_tlo2.jpg);
    background-size: cover;
    background-blend-mode: overlay;
    font-family: Arial, Helvetica, sans-serif;
    background-repeat: no-repeat;
    background-attachment: fixed;
    backface-visibility: 40%;

}
#boxy{
    width: 90%;
    height: 200px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 15%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    
}
.div{
    flex-basis: 300px;
    height: 300px;
    margin: 2px;
    border: solid white 2px;
    display: flex;
    align-items: center;
    border-radius: 1px;
    
}
.div:hover{
    box-shadow: 0 0 4px  #000;
}
#k0{
    background-image: url(obrazek1.jpg);
    background-size: cover;
    background-color: rgb(88, 85, 85);
    background-blend-mode: overlay;
}
#k1{
    background-image: url(obrazek2.jpg);
    background-size: cover;
    background-color: rgb(88, 85, 85);
    background-blend-mode: overlay;
}
#k2{
    background-image: url(obrazek3.jpg);
    background-size: cover;
    background-color: rgb(88, 85, 85);
    background-blend-mode: overlay;
}
#k3{
    background-image: url(obrazek4.jpg);
    background-size: cover;
    background-color: rgb(88, 85, 85);
    background-blend-mode: overlay;
}
#k0:hover{
    transition: 0.2s;
    
    background-color: rgb(49, 49, 49);
    background-blend-mode: overlay;
    
}
#k1:hover{
    transition: 0.2s;
    
    background-color: rgb(49, 49, 49);
    background-blend-mode: overlay;
}
#k2:hover{
    transition: 0.2s;
    
    background-color: rgb(49, 49, 49);
    background-blend-mode: overlay;
}
#k3:hover{
    transition: 0.2s;
    
    background-color: rgb(49, 49, 49);
    background-blend-mode: overlay;
}
.aaa{
    font-size: 2rem;
    text-decoration: none;
    text-align: center;
    text-transform: uppercase;
    color: white;
    margin: 10%;
    overflow: hidden;
    flex: 1;
    width: 100%;
    font-size: 28px;
    padding: 136px 0;
    opacity: 90%;
    
    

}
h1{
    text-align: center;
    font-size: 2.5rem;
    color: white;
    text-shadow: 0 0 20px  #000;
    opacity: 90%;
}
footer{
    padding: 1vw 0;
    background: #ffffff70;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
    
}