video { 
position: fixed; 
right: 0; 
bottom: 0; 
min-width: 100%; 
min-height: 100%; 
width: auto; 
height: auto; 
z-index: -100; 
background-size: cover; 
}  

tasiyici{
width:310px;
height:310px;
margin-left:1000px;
background-color:#BCDDEF;
position:relative;
}