.customer {
  padding-top:  0px;
  padding-bottom: 60px;
}  
.pd-t-b .cert-text{
  font-size: 36px;
  color: var(--title-text-color);
  line-height: 1;
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
}

.cert-list {
  text-align: center;
}

.cert-list ul {
  margin: 0 0 0 -2%;
}

.cert-list ul li {
  flex: 16.66%;
  height: auto;
  padding:0 10px;
  margin-bottom: 30px;
  text-align: center;
}

.cert-list ul li a {
  display: block;
  width: 100%;
  overflow: hidden;
}

.cert-list ul li img {
  width: 100%;
  border: 3px solid #e0e0e0;
  box-sizing: border-box;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.cert-list ul li p {
  font-size: 16px;
  margin: 10px 0 0 0;
  color: #252525;
}
@media screen and (max-width: 996px){
.cert-list ul li {
  flex: 20%;
  padding: 0 5px;
  margin-bottom: 20px;
}
}

@media screen and (max-width: 768px) {
  .main {
    padding-top: 25px;
    padding-bottom: 30px;
  }
.cert-list ul li {
  flex: 33%;
  padding: 0 2px;
  margin-bottom: 10px;
}
  /* .cert-list ul li {
    width: 48%;
    margin: 0 0 15px 2%;
  } */
}