.middle {
  transition: .5s ease;
  opacity: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  text-align: center;
}

.container-overlay .image { 
  background-color: #FFF;
} 


.container-overlay:hover .image {
  opacity: 0.3;
} 

.container-overlay:hover{
  background-color: #000;
}

.container-overlay .middle .text{
  font-size: 40px;
  color: #FFF;
}
 
.container-overlay:hover .middle {
  opacity: 1;
}

.cornerBorder:before,
.cornerBorder:after {
  height: 100px;
  width: 100px;
  position: absolute;
  content: '';
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
}  
 
.cornerBorder:before {
  left: 0;
  top: 0;
  border-left: 10px solid var(--black);
  border-top: 10px solid var(--black);
  transform: translate(-35%, -50%);
}
.cornerBorder:after { 
  right: -30px;
  bottom: -30px; 
  border-right: 10px solid var(--black);
  border-bottom: 10px solid var(--black);
}
 
.cornerBorderHolder{ 
    position: absolute;
    top:-30px; 
    right: 110px;
}
  
/* Using floats */
.grid-col {
  float: left; 
  width: 50%;
}

.grid-item{  
  margin: 20px;
  background-color: var(--white); 
}
.grid-text-holder{
  margin-left: 15px;
  margin-right: 15px;

}

/* 2 columns by default, hide columns 2 & 3 */
.grid-col--2, .grid-col--3 { display: none }
 
/* 3 columns at medium size */
@media ( max-width: 767px ) {
  .grid-col { width: 100%; }
  .grid-col--2 { display: block; } /* show column 2 */
}  
 
/* 3 columns at medium size */
@media ( min-width: 768px ) {
  .grid-col { width: 33.333%; }
  .grid-col--2 { display: block; } /* show column 2 */
} 

/* 4 columns at large size */
@media ( min-width: 1080px ) {
  .grid-col { width: 33.333%; }
  .grid-col--3 { display: block; } /* show column 3 */
}

@media (max-width: 767px) {
  .cornerBorderHolder{
    position: relative; 
    padding-bottom: 30px;
    padding-top: 30px;
    right: -20px; 
  }
}

.gradItemCtrUp{
  position: relative;
  width: 100%;
  height: 50px;
  top: 0;
  left: 0;
  right: 0;
  background: rgb(0,0,0);
  background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.2) 1%, rgba(0,0,0,0.001) 30%);
}
  
.gradItemCtrDown{
  position: relative; 
  width: 100%;
  height: 50px; 
  bottom: 0; 
  left: 0; 
  right: 0;
  background: rgb(0,0,0);
  background: linear-gradient(360deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.2) 1%, rgba(0,0,0,0.001) 30%);
}

.homeBookTxtCont{
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;

  padding-top: 20px;
  padding-left: 50%;
}