.btnlogin{
margin: 15px 36% ;
}


.divprofil{
  height: 100%;
  background-color: lightblue;

  font-size: 15px;
}





@media(max-width:800px){

.c-sin {
width: 100%;
border-style: none none none outset;

 }

.c-des {
width: 100%;
border: hidden;
padding-right: 10%;
 }

.c-cen {
width: 100%;
border: hidden;
padding-left: 10%;
padding-right: 10%;
 }
}