.btn-st {
  position: relative;
  display: inline-block;
  color: #fff;
  cursor: pointer;
  font-size: 18px;
  font-weight: 100;
  background-color: transparent;
  border: none;
  z-index: 2;
}

.btn-st:before {
  content: '';
  position: absolute;
  width: 40%;
  height: 200%;
  top: -50%;
  left: -15%;
  background: #333;
  padding: 0px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
  z-index: -1;
  -webkit-transition: all .3s ease-in-out;
  -moz-transition: all .3s ease-in-out;
  -o-transition: all .3s ease-in-out;
  transition: all .3s ease-in-out;
}

.btn-st:after {
  content: '';
  position: absolute;
  width: 110%;
  height: 10%;
  top: 105%;
  left: -5%;
  background: #fff;
  padding: 0px;
  z-index: 0;
  -webkit-transition: all .3s ease-in-out;
  -moz-transition: all .3s ease-in-out;
  -o-transition: all .3s ease-in-out;
  transition: all .3s ease-in-out;
}
.btn-st:hover {
  color:#fff;
  font-weight:400;
}

.btn-st:hover:before {
  -webkit-border-radius: unset;
  border-radius: unset;
  -webkit-transform: translateX(120%) scaleX(3) scaleY(0.8);
  -ms-transform: translateX(120%) scaleX(3) scaleY(0.8);
  transform: translateX(120%) scaleX(3) scaleY(0.8);
}

.btn-st:hover:after {
  -webkit-transform: translateX(-55%) translateY(-550%) rotate(90deg) scaleX(0.3);
  -ms-transform: translateX(-55%) translateY(-550%) rotate(90deg) scaleX(0.3);
  transform: translateX(-55%) translateY(-550%) rotate(90deg) scaleX(0.3);
}
main {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  left:0px!important;
}
.mapsayar iframe{
  width: 100%!important;
  height:400px;
}
.boyut{

  margin-bottom:15px!important;
}
@media screen and (min-width:768px){
  .boyut{
    width: 13rem;
    font-size: 5rem; 
  }
  .custom-turn-btn{
    padding-left: 23px;
    padding-right: 22px;
    padding-top: 28px;
    background-color: white;
    color: #333;
    z-index: 9999999999999999;
    border-radius: 60px;
    padding-bottom: 20px;
  }
}
@media screen  and  (min-width:768px) and (max-width:992px){
  .boyut{
   margin-left:25%!important; 
 }
}

@media screen and (max-width:992px){
  .hid-sm{
    display:none!important;
  }

}

@media screen and (min-width:1000px) and (max-width:1200px){
  .boyut{
   margin-left:-10%!important; 
 }
 
}

@media screen and (min-width:1200px) {
  .boyut{
   margin-left:5%!important; 
 }
 
}
@media screen and (max-width:768px){
  .boyut{
   margin-left:8%!important; 
 }
 .custom-turn-btn{
  padding-left: 23px;
  padding-right: 22px;
  padding-top: 28px;
  background-color: white;
  color: #333;
  z-index: 9999999999999999;
  border-radius: 60px;
  padding-bottom: 20px;
}
}
@media screen and (max-width:498px){

  .custom-turn-btn{
    padding-left: 14px;
    padding-right: 13px;
    padding-top: 18px;
    background-color: white;
    color: #333;
    z-index: 9999999999999999;
    border-radius: 60px;
    padding-bottom: 10px;
  }
  .boyut{
   margin-left:0%!important; 
 }
 .hid-xs{
  display:none!important;
}

}
.book-card {
  width: 100%;
  padding: 16px;
  border-radius: 5px;
  background-color: transparent;

}
.book-card .book-card__cover {
  position: relative;
  width: 200px;
  height: 300px;
  margin: 0 auto 8px auto;
  perspective: 1000px;
}
.book-card .book-card__book {
  height: 100%;
  transform-style: preserve-3d;
  transition: all 250ms ease;
}
.book-card .book-card__book-front {
  position: absolute;
  height: 100%;
}
.book-card .book-card__book-back {
  position: absolute;
  top: 0;
  height: 100%;
  width: 100%;
  transform: translateZ(-40px);
}
.book-card .book-card__book-side {
  position: absolute;
  top: 5px;
  bottom: 2px;
  right: -29px;
  width: 40px;
  background-size: 5px;
  background-color: #e1e1e1;
  background-image: linear-gradient(to right, #ccc 35%, #e1e1e1 35%);
  opacity: 0;
  transform: rotate3d(0, 1, 0, 90deg);
}
.book-card .book-card__img {
  width: 100%;
  height: 100%;
  background-color: #e1e1e1;
}
.book-card .book-card__title {
  font-size: 1.5em;
  margin-bottom: 8px;
}
.book-card .book-card__author {
  color: #757575;
  font-size: 1em;
}
.book-card:hover .book-card__book {
  transform: rotate3d(0, -1, 0, 30deg) translate(-15px, -30px);
  cursor:pointer;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
}
.book-card:hover .book-card__book-back {
  box-shadow: 5px 10px 15px rgba(0, 0, 0, 0.35);
}
.book-card:hover .book-card__book-side {
  opacity: 1;
}