@media (min-width: 200px) and (max-width: 800px) {
  #fmmblogHomeBlock ul li { width: 100%; }
}

@media (min-width: 801px) and (max-width: 991px) {
  #fmmblogHomeBlock ul li {
    margin: 0 15px 15px 8px;
    width: 46%;
  }
}

@media (min-width: 992px) and (max-width: 1600px) {
  #fmmblogHomeBlock ul li {
    margin: 0 15px 15px 10px;
    width: 30%;
  }
}