*{
    margin: 0;
    padding: 0;
}
::selection{
    background-color: red;/*لما تشتي تفعل نسخ لكلام يوقع لونه احمر*/
}
#header{
    height: 100VH;
    background-image: url(background.png);
    background-position: center;
     background-size: cover;  
}
.continer{
    margin-right: 100px;
    margin-left: 100px;    
}
.logo{
    margin-top: 30px;
    width: 100px;
}
.header-text{
    max-width: 350px;
    margin-top: 140PX;
}
h1{
    font-size: 34PX;
}
.btn{
    padding: 18PX 40PX;
    background: transparent;
    border: 2px solid rgb(216, 10, 10);
    outline: none;
    cursor: pointer;
    margin-top: 5px;
}
p{
    font-size: 15px;
    line-height: 18px;     /*   يمدد الخط البراقراف */
    color: gray;
}
.square{
    height: 12px;
    width: 12px;
    background-color: rgb(223, 139, 139);
    display: inline-block;
    margin: 15px ;
}
.line-1{
    width: 15px;
    height: 15px;
    background-color:chocolate;
    display:inline-block;
    margin-top: 30px;
}
.line-2{
    width: 70px;
    height: 1px;
    background-color:chocolate;
    display:inline-block;
    margin-top: 30px;
}
.line-3{
    width: 110px;
    height: 1px;
    background-color:chocolate;
    display:inline-block;
    margin-top: 30px;
}
#sidenav{
    width: 250px;
    height: 100vh;
    background-color: coral;
    position: fixed;
    top: 0;
    right: -250px;
    z-index: 2;
    transition: 3s;/*يفعل حركه بطيه بمقدار ثلاث ثواني*/

}
nav ul li{
    list-style: none;
    margin: 50px 20px;
}
nav ul li a{
    text-decoration: none;
    color: aliceblue;

}
#menubtn{
    position: fixed;
    width: 50px; 
    right: 65px;
    top: 35px;
    z-index: 2;
    cursor: pointer;

}
#about-us , #offiser{
    padding: 0px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.about-left{
    flex-basis: 50%;
}
.about-left img{
    width: 100%;
}
.about-right{
    background-color:antiquewhite;
    flex-basis: 50%;
    text-align: right;    
}
.about-text{
    max-width: 500px;
    margin-right: 100px;
    display: inline-block;/*تكون متناسقه دون تحديد العرض والاارتفاع*/
}
.about-text h2{
    font-style: italic;

}
.about-text h3{
    color: green;
    font-style: italic;
}
#features{
    padding-top: 50px;
    padding-bottom: 50px;
    background-color: bisque;
}
.features-row{
    width: 80%;
    /* background-color: aqua; */
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-around;
    flex-wrap: wrap;
}
.features-coll{
    flex-basis: 25%;
    /* background-color:rgb(169, 74, 74); */
    text-align: center;
}
.features-coll img{
    width: 100px;
}
.features-coll  h4{
    margin-bottom: 15px;
    font-size: 20px;
}
.features-btn{
    margin:80px auto 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.features-btn .line{
    text-align: right;
    /* display: inline-block; */
    margin-right: 25px;
}
#courses{
    /* background-color: aqua; */
    padding: 20px;
    /* border: 2px solid black; */
    display: inline-block;
}
.contener-co{
    /* background-color: antiquewhite; */
    flex-basis: 100%; 
    display: flex;
    align-items: center;
}
.courses-left{
    width: 50%;
    /* border: 2px solid black; */
    margin: 10px;
}
.courses-right{
    width: 50%;
    text-align: center;
    /* border:2px solid black; */
}
.courses-right img{
    width: 100%;
}
.courses-text{
    max-width: 350px;
}
.courses-text button{
    margin: 30px;
}
#contact{
    background-color: aqua;
    /* display: flex; */
    align-items: center;
    /* flex-wrap: wrap; */
}
.contactus{
    display: flex;
    flex-basis: 100%;
    background-color: antiquewhite;
    margin: auto;
    align-items: center;
    /* margin:10px;
    padding: 5px;
    border: 2px solid black; */
}
.contact-lift{
    width: 50%;
    text-align: center;
     /* border: 2px solid black; */
} 
.contact-right{
    width: 50%;
    text-align: center;
    /* border: 2px solid black; */

}
.contact-right img{
    width: 100%;
}
form input{
    width: 50%;
    text-align: center;
    padding: 10px 10px;
    margin-bottom: 12px;
    box-sizing: border-box;
}
hr{
    width: 100%;
    margin: 40px 0px;
}
.foter-row{
    /* background-color: aqua; */
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}
.foter-left{
    /* background-color: antiquewhite; */
    flex-basis: 50%;
    margin-top: 60px;
}
.foter-right{
    
    flex-basis: 35%;
}
.fotr-link{
    display: flex;
    flex-wrap: wrap; 
    justify-content: space-between; 

}
.liinktitle{
    color: pink;
}
.liinktitle small{
    color: green;
}
.foter-info{
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
    flex-wrap: wrap;
}
.foter-logo img{
    width: 80px;
}
.foter-logo button{
    padding:  12px 28px;
    margin: 20px;
}
.copy-right , .foter-logo{
    flex-basis: 40%;
     
}
.socale-icon{
    width: 50px;
    position: fixed;
    transform: translateY();
    top: 45%;
    left: 0px;
    z-index: 1;
   
    /* display: flex; */
    /*justify-content: space-around;
    background-color:antiquewhite; */
}
.socale-icon img{
    /* border: 2px solid black; */
    /* background-color:aquamarine; */
    cursor: pointer;
}
@media only screen and (max-width: 770px) {
    #header{
        background-image: none;
    }
    .continer{
        margin-left:50px ;
        margin-right:50px ;
    }
    .logo{
        margin-top: 20px;
        width: 70px;
    }
    .header-text{
        max-width: 100px;
        margin-top: 140px;
    }
    h1{
    font-size: 20PX;
     }
     #menubtn{
        width: 40px;
        padding:10px 7px;
     }
     .about-left{
        flex-basis: 100%;
     }
     .about-right{
        flex-basis: 100%;
     }
     .features-coll{
        flex-basis: 100%;
     }
   .courses-right{
        flex-basis: 100%;
        
    }
    .courses-left{
        flex-basis: 100%;
    }
    .contact-lift{
        flex-basis: 100%;
    }
    .contact-right{
        flex-basis: 100%;
    }
    .foter-right{
        flex-basis: 100%;
    }
    .foter-left{
        flex-basis: 100%;
    }
 
    
    }