.op7
{ 
opacity: 0.7;
-webkit-transition: opacity 0.4s linear;
-moz-transition: opacity 0.4s linear;
-o-transition: opacity 0.4s linear;
-ms-transition: opacity 0.4s linear;
transition: opacity 1s linear;
}
.op7:hover
{ 
opacity: 1;
}  
.op4
{
opacity: 0.4;
-webkit-transition: opacity 0.4s linear;
-moz-transition: opacity 0.4s linear;
-o-transition: opacity 0.4s linear;
-ms-transition: opacity 0.4s linear;
transition: opacity 1s linear;
}
.op4:hover
{ 
opacity: 1;
} 
.rasstoyanie
{
line-height: 100px;
}
img {
    border: 0px;
   }
#sloy1 {
    z-index: 1; 
    width: 100%; 
    height: 100%; 
    position: absolute;
    left: 0;
    top: 0;
   }
#sloy2 {
    position: absolute;
    z-index: 2; 
	 width: 100%; 
    height: 100%; 
   }