*{
    padding:0;
    margin:0;
    box-sizing: border-box;
}

 body {
    background-color:#fffaf2;
  } 
  
/* navbar */
header{
    background-color:black ;
    padding: 20px 25px;
}

nav{
    display: inline-block;
    width: calc(100%-103px);
    text-align: right;
}

.selin{
color: white;
text-decoration:none ;
font-weight: bold;
font-size: 22px;

}


/* patika */
.btn-s1{
    display: inline-block;
    margin-left: 70px;
    margin-top: 5%;
    background-color:#286143;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s1:hover{
    color:black;
}
/* target */
.btn-s2{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color:#d6c7ff;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s2:hover{
    color:black;
}

/* UDEMY */
.btn-s3{
    display: inline-block;
    margin-left: 70px;
    margin-top: 5%;
    background-color:#55a189;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s3:hover{
    color:black;
}

/* geri dön */
.btn-s4{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color:#55959e;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s4:hover{
    color:black;
}
/* GLOBAL AI */
.btn-s5{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color:#377661;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s5:hover{
    color:black;
}
/* BTK */
.btn-s6{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color: #0f4446;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s6:hover{
    color:black;
}

/* YOUTUBE */
.btn-s7{
    display: inline-block;
    margin-left: 55px;
    margin-top: 5%;
    background-color:#15605a;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s7:hover{
    color:black;
}

/* YOUTUBE */
.btn-s8{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color:#93DBB8;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s8:hover{
    color:black;
}
/* 2.derece */
.btn-s9{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color:#8d8ce3;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s9:hover{
    color:black;
}
.btn-s10{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color: #505790;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s10:hover{
    color:black;
}
/* web */
.btn-s11{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color: #1a687f;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s11:hover{
    color:black;
}
/* dergi */

.btn-s12{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color: #278700;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s12:hover{
    color:black;}

    
.btn-s13{
    display: inline-block;
    margin-left: 70px;
    margin-top: 10%;
    background-color: #95305f;
    color: #fff;
    padding: 25px 25px;
    font-size: 20px;
    border-radius: 6px;
    transition: color 1s;
    text-decoration: none;
}

.btn-s13:hover{
    color:#000000;}


    .photo {
        width: 100%;
        height: auto;
        max-width: 200px;
        display: block;
        margin: 0 auto;
      }