*{
    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/danisma.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: 60%;
    background-color: #00ff3769;
    font-size: 50px;
    border-radius: 10px;
    color: #000000e1;
}

.sec_1_div p{
  color: #ffffff;
  font-size: 30px;
  width: 60%;
  background-color: #0000007e;
  border-radius: 10px;
}
/************* footer ***********/
.footer{
color: #ffffff;
position: absolute; 
text-align: center;
bottom: 2px;
width: 100%;
left: 0px;
font-size: 16px;
/*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: #ffffff;
  font-size: 20px;
  width: 100%;
  background-color: #00000093;
}
.footer{
    font-size: 15px;
    bottom: 5px;
    color: #000;
    }
.footer a{
    color: #181818;
    text-decoration: none;
    }

}