.floating {  
    animation-name: floating;
    animation-duration: 3s;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
    margin-left: 30px;
    margin-top: 5px;
}
.floating1 {  
    animation-name: floating;
    animation-duration: 4s;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
    margin-left: 30px;
    margin-top: 15px;
}
 
@keyframes floating {
    0% { transform: translate(0,  0px); }
    50%  { transform: translate(0, 15px); }
    100%   { transform: translate(0, -0px); }    
}

@keyframes floating1 {
    0% { transform: translate(0,  0px); }
    50%  { transform: translate(0, 25px); }
    100%   { transform: translate(0, -0px); }    
}