*{
    margin: 0;
    padding: 0;
    

}
header{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 100px;
    background-color: rgb(255, 255, 255);
    
}
header ul{
    position: relative;
}
header ul li{
    position: relative;
    list-style: none;
    float: left;
    

}
header ul li a{
    color: rgb(3, 12, 61);
    font-size: 1.2rem;
    padding: 20px 25px;
    text-decoration: none;
    display: flex;
    justify-content: space-between;
}
header ul li a:hover{
    background-color: rgb(246, 246, 248);
    color: rgb(4, 4, 67);
}
header ul li ul{
    position: absolute;
    left: 0;
    width: 200px;
    background-color: rgb(172, 211, 245);
    display: none;
    

}
.aboutus{

    
}
.servi:hover{
    background-color: aqua;
}

header ul li ul li{
    position: relative;
    width: 100%;
    
}
header ul li:hover > ul{
    display: block;
}
header ul li ul li ul{
    top:50px;
    left: 200px;
    display: none;
    background-color: rgb(128, 188, 240);
}
#cross{
    display: none;
}


#burger{
    display: none;
}
.why{
    background-image: url("https://lh6.googleusercontent.com/proxy/E01ko3B1fiWyw0zKbGcAed6HcddjNjXUw-EMPIUxMbLR7Y9dT3Ip79gAsgNU29faWgxicl27dON6H2m9wCORSdMug6eb6pGcvgkfWhIlEIi6E856yTzCIS-sJD0IGLfJZA");
    background-repeat: repeat;
    background-size: cover;
    background-position: center;
}
@media (max-width: 600px){
    #burger{
        display: block;
    }
    .eader{
        position: absolute;
        top: -200px;
    }
  
  #cross{
    display: block;
  }
   header{
   padding: 0 10px;
   
   }
   
  
   
   
    header ul{
        position: absolute;
        top: 0px;
        width: 100%;
        left: 0;
        background: rgb(187, 208, 230);
        ;
    } 
    header ul li{
        width: 80%;
        position: relative;
        
    }  
    header ul li ul{
        position: relative;
        width: 100%;
        left: 0;
    }
    header ul li ul li ul{
        top: 0;
        left: 0;
    } 
    header ul li:hover  ul li{
       background: white;
    }
    .servicesa{
        
        flex-direction: column;
        position: relative;
        left: 0;
        


    }
    .your{
        display: flex;
        flex-direction:column ;
        
    }
    .nora{
        display: flex;
        flex-direction: column;
    }
    .serv {
        position: relative;

        left: 0;
    }
#uadr{
    left: -450px;
}

.for{
   
}
}

.trugh{
    background-image: url("https://cdn.pixabay.com/photo/2016/01/20/08/36/best-security-company-london-uk-1151114_960_720.jpg");
    height: 85vh;
    background-size: cover;
    background-repeat: no-repeat;
}