.logo{
  display:block;
  width:40px;
  height:40px;
  flex:0 0 40px;
  object-fit:contain;
  vertical-align:middle;
  border-radius:10px;
}
header.site .row{column-gap:12px}
header.site .mark{white-space:nowrap}
footer.site .logo-sm{
  width:28px;
  height:28px;
  flex-basis:28px;
  margin-top:24px;
  margin-bottom:1.1em;
  border-radius:7px;
}
@media(max-width:430px){
  header.site .row{column-gap:10px}
}