pitaya-launcher/css/style.css

* {
  box-sizing: border-box;
}

html, body {
  padding: 0;
  margin: 0;
  font-family: 'Droid Sans', 'Ubuntu Sans', sans-serif;
  background: url('../img/background.png') no-repeat;
  background-size: contain;
  background-position: center;
  background-color: rgb(34, 107, 160);
  width: 100%;
  height: 100%;
  color: white;
  overflow-x: hidden;
}

/* Launcher View */

.launcher {
  display: flex;
  width: 100%;
  height: 100%;
  flex-direction: column;
}

.launcher .category-header {
  padding: 40px 50px 0;
  font-size: 50px;
}

.launcher .category-header a.goback {
  text-decoration: none;
  color: white;
}

.launcher .category-header a.goback:hover {
  -webkit-animation: 500ms pulse-large infinite;
}

.launcher .category-header > .category-label {
  float: right;
}

.launcher .category-header .goback {
  font-weight: normal;
}

.launcher ul.apps-list {
  display: block;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  align-content: center;
  flex-grow: 1;
}

.launcher li.app-item {
  margin: 5px;
  border-radius: 5px;
  background-color: rgba(0,0,0,0.4);
  box-shadow: 5px 5px 30px -2px rgba(0,0,0,0.5);
  cursor: pointer;
  padding: 10px 5px;
  text-align: center;
  margin-top: 5px;
  transition: 150ms linear;
  position: relative;
  overflow: hidden;
  min-width: 150px;
}

.launcher li.app-item::after {
  content: ' ';
  display: block;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  width: 150%;
  height: 125%;
  position: absolute;
  left: -50%;
  top: -75%;
}

.launcher li.app-item:hover {
  background-color: rgba(0,0,0,0.6);
}

.launcher li.app-item > .app-icon {
  width: 70%;
  height: auto;
}

.launcher li.app-item > .app-label {
  display: block;
  text-align: center;
  color: white;
}

/* Animations */

.pulse {
  -webkit-animation: 1s pulse infinite;
}

@-webkit-keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

@-webkit-keyframes pulse-large {
  0% { transform: scale(1); }
  50% { transform: scale(1.5); }
  100% { transform: scale(1); }
}

@-webkit-keyframes slide-in-left {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(0%); }
}

@-webkit-keyframes slide-in-right {
  0% { transform: translateX(100%); }
  100% { transform: translateX(0%); }
}

@-webkit-keyframes slide-out-left {
  0% { transform: translateX(0%); }
  100% { transform: translateX(-100%); }
}

@-webkit-keyframes slide-out-right {
  0% { transform: translateX(0%); }
  100% { transform: translateX(100%); }
}