.overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  width: 100%;
  opacity: 0;
  transition: .5s ease;
  background-color: #008CBA;
}

.container:hover .overlay {
  opacity: 1;
}

.text {
    color: white;
    font-size: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    text-align: center;
}

.container {
    position: relative;
    padding: 15px;
    display: block;
}
  
.image {
    display: block;
    width: 100%;
    height: auto;
    
}
section{
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

#icons {
    display: flex;
    justify-content: center;
    align-items: center;
}

.portfoliobox {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-content: center;
    max-width: 700px;
}
.portfoliorow {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-content: center;
}

/* Clear floats after the columns */
.portfoliobox:after {
    content: "";
    display: table;
    clear: both;
}
  
a:hover {
    position: center;
}