#cert-list{
	position: relative;
	width: 84%;
	height: auto;
  overflow: auto;
	left: 8%;
}

#cert-list .element{
	width: 290px;
  height: 200px;
	margin-right: calc(33.34% - 387px);
  margin-bottom: 30px;
  border: 4px solid rgb(50, 50, 50);
  box-shadow: 3px 3px 5px rgb(50, 50, 50);
  box-sizing: border-box;
	float: left;
	overflow: hidden;
}

#cert-list .element:nth-of-type(4n+0){
	margin-right: 0;
}

#cert-list .element .picture-frame{
  position: relative;
	width: 100%;
  height: 100%;
	overflow: hidden;
}

#cert-list .element img{
	width: 100%;
}

#cert-list .element .title{
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 60px;
  font-size: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: white;
  background-color: rgba(0, 0, 0, 0.7);
}

@media (max-width: 1450px){
  #cert-list .element{
    margin-right: calc(50% - 435px);
    margin-bottom: 50px;
  }
	#cert-list .element:nth-of-type(4n+0){
    margin-right: calc(50% - 435px);
  }
  #cert-list .element:nth-of-type(3n+0){
    margin-right: 0;
  }
}

@media (max-width: 1100px){
  #cert-list .element:nth-of-type(2n+1){
    margin-right: min(120px, calc(100% - 580px));
    margin-bottom: 40px;
  }
	#cert-list .element:nth-of-type(2n+0){
    margin-right: 0;
    margin-bottom: 40px;
  }
}

@media (max-width: 750px){
  #cert-list .element:nth-of-type(1n+0){
    margin-left: calc(50% - 145px);
    margin-right: calc(50% - 145px);
    margin-bottom: 30px;
  }
}