*{
    margin:0; 
 }
 body{
     
     background:url("./schooldesk.webp");
     background-repeat: repeat-y;
     background-size:cover ;
 }
 a{
    text-decoration: none;
    color: aliceblue;
  }  
 signin{
     text-decoration: none;
     font-size: medium;
 }
 .lo{
    width: 40px;
    height: 40px;
 }