footer
{ 
  background-image: linear-gradient(rgba(255, 255, 255, 0) , rgba(0, 0, 0, 0.507) );
  backdrop-filter: blur(30px);
  display: flex;
  justify-content: space-around;
  position: absolute;
  text-align: center;
  bottom: 0;
  width: 100vw;
  height: 70px;
  padding: 10px;
 } 

 @media only screen and (min-width: 720px) {

 .github_card:hover::before{
    content: '';
    width: 250px;
    height: 150px;
    background-image: url(/images/githubcard.png);
    background-size: cover;
    background-repeat: no-repeat;
    position: absolute;
    bottom: 15vh;
    left: 22vw;
    animation: card 0.29s forwards;
  }
  
  .linkedin_card:hover::before{
    content: '';
    width: 250px;
    height: 150px;
    background-image: url(/images/linkedincard.png);
    background-size: cover;
    background-repeat: no-repeat;
    position: absolute;
    bottom: 15vh;
    right: 35vw;
    animation: card 0.29s forwards;
  }

 
.medium_card:hover::before{
  content: '';
  width: 250px;
  height: 150px;
  background-image: url(/images/mediumcard.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  position: absolute;
  bottom: 15vh;
  right: 8vw;
  animation: card 0.29s forwards;
}

@keyframes card{
  0%   {opacity: 0.5; }
  25%  {transform: skewX(4deg);}
  50%  {transform: skewX(2deg);}
  75%  {transform: skewX(5deg);}
  100% {opacity: 1; transform: skewX(6deg); }
}
 }