*{ padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body {
    direction: ltr;
    width: 100%;
    height: 100%;
    background:#fff7dc;
    font-size: larger;
    text-align: left;
    padding: 3%;

}
span{
    display: block;
    font-size: 17px;
    margin: 8px 0  14px 0  ;
    font-family: 'Nazanin';

}
#a3{
    border-width: 3px;
    border-style: solid;
    border-radius: 5px;
    padding-left: 6px;
    padding-right: 10px;
    border-color: #ffa600;
}
span#a1{
    display: block;
    font-size: 35px;
    text-align: center;
    margin: 8px 360px  14px 360px  ;
    font-family: 'Nazanin';

}
#a1:hover{
    color: rgb(255, 187, 0);
}
#a2:hover{
    color: rgb(255, 187, 0);
}
span#a2{
    display: block;
    font-size: 28px;
    margin:0 0 4% 900px ;
    font-family: 'Nazanin';
}

#a4{
    color: black;
    border-width: 3px;
    border-style: solid;
    border-radius: 5px;
    padding-left: 6px;
    padding-right: 10px;
    border-color: #ffd485;
}

@font-face {
    font-family: 'Nazanin';
    src: url('https://cdn.fontcdn.ir/Font/Persian/Nazanin/Nazanin.eot');
    src: url('https://cdn.fontcdn.ir/Font/Persian/Nazanin/Nazanin.eot?#iefix') format('embedded-opentype'),
		 url('https://cdn.fontcdn.ir/Font/Persian/Nazanin/Nazanin.woff') format('woff'),
		 url('https://cdn.fontcdn.ir/Font/Persian/Nazanin/Nazanin.ttf') format('truetype');
    font-weight: normal;
}