.footer{
    position: fixed;
    bottom: 0;
    width: 100%;
}
.img-center {
    display: block;
    float: left;
    margin-left: 5%;
    width: 20%;
}
.img-center2 {
    display: block;
    float: right;
    margin-right: 5%;
    width: 20%;
}
body {
    background-color: #149954;
    font-family: monospace;
}

button {
  
  display: block;
  cursor: pointer;
  outline: none;
  border: 0;
  
  text-decoration: none;
  font-size: 1.5rem;
  color: black;
  font-weight: 700;
  text-transform: uppercase;
  font-family: inherit;
  margin: auto;
}

button.big-button {
  padding: 1em 2em;
  border: 2px solid #E4312B;
  color: white;
  border-radius: 1em;
  background:black;
  transform-style: preserve-3d;
  transition: all 175ms cubic-bezier(0, 0, 1, 1);

}
button.big-button::before {
  position: absolute;
  content: "";
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #E4312B;
  border-radius: inherit;
  box-shadow: 0 0 0 2px black, 0 0.75em 0 0 black;
  transform: translate3d(0, 0.75em, -1em);
  transition: all 175ms cubic-bezier(0, 0, 1, 1);
}

button.big-button:hover {
  background: black;
  color: white;
  border: 2px solid white;
  box-shadow: 0 0 0 2px white, 0 0.75em 0 0 white;
  
  transform: translate(0, 0.375em);
}

button.big-button:hover::before {
  transform: translate3d(0, 0.75em, -1em);
  
}

button.big-button:active {
  transform: translate(0em, 0.75em);
  background: green;
  color: black;
  
  
}

button.big-button:active::before {
  transform: translate3d(0, 0, -1em);

  box-shadow: 0 0 0 2px #E4312B, 0 0.25em 0 0 #149954;
}