body{
    background-image:url("3.gif");
    background-repeat:no-repeat;
    background-size:100% 100%;
    background-position:center;
    background-color:black;
}
.I{
    padding:10px;
    margin:30px;
    font-family:Arial, Helvetica, sans-serif;
}
.A1{
    background-color:grey;
    color:black;
    border:dashed;
    border-radius:20px;
    min-height:100px;
    min-width:150px;
}
.A1:hover{
    background-color:rgb(253, 237, 6);
    transition:2s;
}
.A1:active{
    background-color:blue;
}
.B1{
   font-size:32px;
   background-image:url("A.gif");
   color: rgb(17, 106, 184);
}
.II{
    padding:10px;
    margin:30px;
    font-family:Arial, Helvetica, sans-serif;
}
.A2{
    background-color:grey;
    color:black;
    border:dashed;
    border-radius:20px;
    min-height:100px;
    min-width:150px;
}
.A2:hover{
    background-color:rgb(253, 237, 6);
    transition:2s;
}
.A2:active{
    background-color:blue;
}
.B2{
   font-size:32px;
   background-image:url("A.gif");
   color: rgb(17, 106, 184);
}