.logo img.full {
  display: none !important;
}

.logo a::before {
  content: '';
  display: inline-block;
  width: 150px; /* adjust as needed /
  height: 40px;
  background-image: url('https://ratemybaseballclub.com/logo.png'); / your custom logo */
  background-size: contain;
  background-repeat: no-repeat;
}