body {
    background-color: black;
}

h1 {
    color: white;
}

h2 {
    color: white;
}

h3 {
    color: white;
}

.center-invader {
    text-align: center;
    position: relative;
}

p {
    color: white;
    font-family: monospace;
    font-size: 16px;
}

.no-padding {
    padding: 0 !important;
    margin: 0 !important;
}

.small-image {
    width: 50px;
    
}
.full-size-image {
    width: 50%;
}

.half-size-image {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 30%;
}
    
}

.image90 {
    width: 90px;
    height: 90px;
}

.image400 {
    width: 400px;
    height: 400px;
}

.game {
    position: relative;
    display: inline-block;
}

.game .img-bottom {
    display: inline-block;
}

.game .img-top {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 99;
}

.game:hover .img-bottom {
    display: none;
}

.game:hover .img-top {
    display: inline-block;
}