div{
    width: 65%;
}
#section4 div 
{
    width:80%;
}
article{
    height: 450px;
     width: 261px;  
}
form{
    width: 70%;
}
input{
    width:40%;
}

iframe{
    width: auto;
}
textarea{
    width: 40%;
}
#kep1, #kep2{
    width: 80%
}
#kep7{
    width:25%;
}
a{
    padding: 20px;}
#section2  
{
    height:1200px;
}
#section1  
{
    height:900px;
}