opengoal-launcher/style.css

* {
  -webkit-user-drag: none;
  font-family: 'AdventPro', sans-serif;
}

:root {
  --bg-blue: #1B202B;
}

@font-face {
  font-family: 'AdventPro';
  font-style: normal;
  font-weight: 400;
  src: url('src/assets/fonts/AdventPro-Regular.ttf');
}

@font-face {
  font-family: 'AdventPro';
  font-style: normal;
  font-weight: 700;
  src: url('src/assets/fonts/AdventPro-Bold.ttf');
}

body {
  height: 100vh;
  padding: 0;
  margin: 0;
  overflow: hidden;
  font-style: normal;
  font-weight: 400;
}

.video-container {
  position: absolute;
  z-index: -1;
  height: 100vh;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  background-color: whitesmoke;
  width: 100%;
  height: 100vh;
  opacity: 0.35;
}

#background {
  z-index: -1;
  height: 100vh;
}

.container {
  display: flex;
}

.sidebar {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: var(--bg-blue);
  opacity: 50%;
  transition: 500ms ease;
  width: 10vw;
  max-width: 10vw;
}

.sidebar:hover {
  opacity: 100%;
}

.games {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
  height: 50vh;
}

.nav-item {
  margin: 0 5px;
  filter: grayscale(100%);
  transition: 500ms ease;
  opacity: 50%;
}

.nav-item.active {
  filter: grayscale(0%);
}

.nav-item:hover {
  filter: grayscale(0%);
  opacity: 100%;
  cursor: pointer;
}

.nav-item.disabled:hover, .nav-item.disabled {
  cursor: not-allowed;
  filter: grayscale(100%);
}

.nav-item a::before,
.nav-item a::after {
  --scale: 0;
  position: absolute;
  transform: translateX(55px) scale(var(--scale));
  transition: 200ms ease;
  transform-origin: left center;
}

.nav-item a::before {
  padding: .5rem;
  width: max-content;
  background: #333;
  color: white;
  content: attr(data-tooltip);
  border-radius: .3rem;
  text-align: center;
}

.nav-item a:hover::before {
  --scale: 1
}

.nav-item img {
  width: 100%;
}

.spacer {
  display: flex;
  height: 20vh;
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;
  height: 30vh;
}

.controls i {
  color: white;
  font-size: 35px;
}

.main {
  display: flex;
  justify-content: center;
  flex-direction: column;
  height: 100vh;
  width: 90vw;
  max-width: 90vw;
}

.flex-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.flex-center > div {
  margin: 15px 0;
}

.buttons > button {
  text-align: center;
  min-width: 200px;
  padding: 10px 0;
  background: linear-gradient(to top, #F3B33F, #FBEC4F);
  border: none;
  font-weight: bold;
  font-size: x-large;
  letter-spacing: 3px;
  color: white;
  border: black 1px solid;
  text-shadow:
   -1px -1px 0 #000,  
    1px -1px 0 #000,
    -1px 1px 0 #000,
     1px 1px 0 #000;
  border-radius: 5px;
  transition: all 0.1s ease;
}

.buttons > button:not(:last-child) {
  margin-right: 1em;
}

.buttons button:active {
  transform: scale(0.9);
  box-shadow: 0px 0px 20px rgba(0, 0, 0, 1);
}

.buttons button:hover {
  cursor: pointer;
  color: orange;
}