*{
    padding: 0;
    margin: 0;
    text-decoration: none;
    list-style: none;
    box-sizing: border-box;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  }

  /* width */
::-webkit-scrollbar {
  width: 2px;
  height: 0px;
}

/* Track */
::-webkit-scrollbar-track {
  box-shadow: inset 0 0 5px rgb(0, 0, 0); 
  border-radius: 10px;
  background-color: #000;
}
 
/* Handle */
::-webkit-scrollbar-thumb {
  background: red; 
  border-radius: 10px;
}

/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
  background: #ff0000; 
}

  
html,
body {
    /*width: 100%;
    height: 100%;*/
    /*overflow: hidden;*/
    /*display: flex;*/
    background-color: #000000;
}

/****************** nav bar ********************/
nav{
    background: rgba(0, 0, 0, 0); 
    height: 80px;
    width: 100%;
    position: fixed;
    z-index: 3;
    top: 0px;
}

.logo{
    width: 100px;
    height: 60px;
    margin: 20px 0 0 30px;
}
  
nav ul{
    float: right;
    margin-right: 20px;
}

nav ul li{
    display: inline-block;
    line-height: 80px;
    margin: 0 5px;
}

nav ul li a{
    color: white;
    font-size: 17px;
    padding: 7px 13px;
    border-radius: 3px;
    text-transform: uppercase;
}

a.active,a:hover{
    background: #1b9bff;
    transition: .5s;
}

.checkbtn{
    font-size: 30px;
    color: white;
    float: right;
    line-height: 80px;
    margin-right: 40px;
    cursor: pointer;
    display: none;
}

#check{
    display: none;
}

@media (max-width: 952px){

  label.logo{
      font-size: 30px;
      padding-left: 50px;
  }

  nav ul li a{
      font-size: 16px;
    }
  }

@media (max-width: 858px){

  .checkbtn{
      display: block;
  }

  ul{
      position: fixed;
      width: 100%;
      height: 100vh;
      background: #2c3e50;
      top: 80px;
      left: -100%;
      text-align: center;
      transition: all .5s;
  }

  nav ul li{
      display: block;
      margin: 50px 0;
      line-height: 30px;
  }

  nav ul li a{
      font-size: 20px;
  }

  a:hover,a.active{
      background: none;
      color: #0082e6;
  }
  #check:checked ~ ul{
      left: 0;
    }
  }
/***************** section **********************/
.sec_1{
    /*margin-top: 80px;*/
    height: 100vh;
    width: 100%;
    /*background-color: #2c3e50;*/
    background-image: url("../images_services/3d_printing_service.jpg");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.sec_1_div{
    padding-top: 20%;
    padding-left: 5%;
}
.sec_1_div h1{
    width: 57%;
    background-color: #00ff3769;
    font-size: 50px;
    border-radius: 10px;
}

.sec_1_div p{
  color: #15ff00;
  font-size: 30px;
  width: 57%;
  background-color: #0000007e;
  border-radius: 10px;
}
/*************** fleche down *****************/
.arrow {
  position: absolute;
  border: solid rgb(16, 214, 32);
  border-width: 0 7px 7px 0;
  display: inline-block;
  padding: 3px;
  height: 50px;
  width: 50px;
  bottom: 7%;
  left: 50%;
}

.arrow_1 {
  position: absolute;
  border: solid rgb(16, 214, 32);
  border-width: 0 7px 7px 0;
  display: inline-block;
  padding: 3px;
  height: 50px;
  width: 50px;
  bottom: 3%;
  left: 50%;
}

.down {
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
}

.proje_content_1{
  margin: 10px 0 0 0;
  height: 80vh;
  width: 100%;
  /*border-style: ridge;
  border-color: #ff0000;*/
  border-radius: 1%;
  display: flex;
}
.proje_content{
  height: 88vh;
  width: 100%;
  /*border-style: ridge;
  border-color: #ff0000;*/
  border-radius: 1%;
  display: flex;
}

.div_proje_foto{
  height: 100%;
  width: 50%;
  /*border-style: ridge;
  border-color: #1b9bff;*/
  justify-content: center;
}

.div_proje_foto h1{
  color: aliceblue;
  text-align: center;
  font-size: 40px;
  padding-top: 5%;
}

.div_proje_foto img{
  /*padding: 10%;*/
  object-fit: contain;
  justify-content: center;
  height: 100%;
  width: 100%;
  vertical-align: middle;
}
.mySlides1, .mySlides2 {
display: none
  }
  
  /* Slideshow container */
.slideshow-container {
    /*max-width: 1000px;*/
    position: relative;
    margin: auto;
    object-fit: contain;
}
  
  /* Next & previous buttons */
  .prev, .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -22px;
    color: white;
    font-weight: bold;
    font-size: 18px;
    transition: 0.6s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
  }
  
  /* Position the "next button" to the right */
  .next {
    right: 0;
    border-radius: 3px 0 0 3px;
  }
  
  /* On hover, add a grey background color */
  .prev:hover, .next:hover {
    background-color: #f1f1f1;
    color: black;
  }

.div_proje_text{
  padding: 3%;
  height: 100%;
  width: 50%;
  /*border-style: ridge;
  border-color: #5cff1b;*/
  overflow-y : scroll;
  /*background-color: #2c2929;*/
}

.div_proje_text p{
  color: #ffffff;
  text-align: justify;
  text-justify: inter-word;
  line-height: 25px;
  font-size: 18px;
}
.div_proje_text h2{
  margin-top: 3%;
  color: #00e1ff;
  text-align: justify;
}
.f{
  font-size: 30px;
}
.f a{
  color: #09ff00;
}

hr{
  margin:1% 10% 1% 10%;
}
/************* footer ***********/
.footer{
color: #ffffff;
/*    position: absolute; */
text-align: center;
bottom: 20px;
width: 100%;
left: 0px;
font-size: 15px;
background-color: black;
}
.footer p{
text-align: center;
}
.footer a{
color: #ffffff;
text-decoration: none;
}

/*********** css responsive **********/
@media (max-width: 820px){
    /*********** section 1*****************/

.sec_1_div{
  padding-top: 70%;
  padding-left: 5%;
  padding-right: 5%;
}
.sec_1_div h1{
  width: 100%;
   background-color: #00ff3769; 
  font-size: 35px;
  border-radius: 10px;
}

.sec_1_div p{
  color: #15ff00;
  font-size: 20px;
  width: 100%;
  background-color: #00000093;
}
/*************** fleche down *****************/
.arrow {
position: absolute;
border: solid rgb(16, 214, 32);
border-width: 0 7px 7px 0;
display: inline-block;
padding: 3px;
height: 50px;
width: 50px;
bottom: 7%;
left: 45%;
}

.arrow_1 {
position: absolute;
border: solid rgb(16, 214, 32);
border-width: 0 7px 7px 0;
display: inline-block;
padding: 3px;
height: 50px;
width: 50px;
bottom: 3%;
left: 45%;
}
  .proje_content_1{
      display: flex;
      flex-direction: column;
  }
  .proje_content{
      display: flex;
      flex-direction: column;
  }
  .div_proje_foto{
      height: 50%;
      width: 100%;
      /*border-style: ridge;
      border-color: #1b9bff;*/
  }
  
  .div_proje_foto h1{
      padding-top: 5%;
      color: aliceblue;
      text-align: center;
      font-size: 30px;
  }
  .div_proje_text{
      height: 50%;
      width: 100%;
      /*border-style: ridge;
      border-color: #5cff1b;*/
      overflow-y: scroll;
  }
  .div_proje_text h2{
      margin-top: 5%;
      color: #ffffff;
      text-align: justify;
  }

}