.container{
    display: grid;
    height: 100vw;
   grid-template-columns: repeat(3,1fr);
   grid-template-rows: repeat(2,1fr);
   grid-gap: 15px;
   margin-top: 10px;

}
body{
    min-height: 100vh;
    max-width: 85vw;
    margin: 0 auto;
}
* {
    box-sizing: border-box; /* ulehci zivot */
  }
.move{
    display: flex;
    color:rgb(15, 12, 12, 0.88);
    border: 3px solid black;
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    justify-content: flex-end;
    align-items: center;
    flex-direction: column;
}

.sex{
}
#sdvx3-button{
position: relative;    
    
}
#sdvx3-button::after{
    content: "";
    background-image: url(sound-voltex-iii-gravity-wars-1.png);   
    background-size: cover;
    opacity: 0.5;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}
#sdvx4-button{
   position: relative;
}
#sdvx4-button::after{
    content: "";
    background-image: url(maxresdefault3.jpg);   
    background-size: cover;
    opacity: 0.5;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 0
}  
#sdvx5-button{
    position: relative;
}
#sdvx5-button::after{
    content: "";
    background-image: url(SDVX5scaled.jpg);   
    background-size: cover;
    opacity: 0.5;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}  
.sex:focus{
    border:10px solid red;
}