remix-project/apps/remix-ide/src/index.css

.centered {
  position           : fixed;
  top                : 20%;
  left               : 45%;
  width              : 200px;
  height             : 200px;
}
.centered svg path {
  fill: var(--secondary);
}
.centered svg polygon {
  fill              : var(--secondary);
}
.splash {
  text-align: center;
}
.version {
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: normal;
  max-width: 300px;
}