.fl-clients-inner ul {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  padding-left: 0;
  margin-bottom: 0;
  list-style-type: none;
  border: .5px solid #eeeeee;
}

.fl-clients-inner ul li {
  -webkit-box-flex: 0;
      -ms-flex: 0 0 auto;
          flex: 0 0 auto;
  width: 20%;
}

.fl-clients-inner ul li a {
  opacity: .5;
  padding: 25px;
  display: block;
  text-align: center;
  border: .5px solid #eeeeee;
  -webkit-transition: var(--transition);
  transition: var(--transition);
}

.fl-clients-inner ul li a:hover {
  opacity: 1;
}