body{
    display: flex;
    background-color: aliceblue;
    padding-top: 5%;
   
    padding-bottom: 5%;
    align-items: center;
    flex-direction: column;
    flex-wrap: wrap;
    align-content: center;
    align-items: stretch;


}

#studentForm{
    display:none;
}
.sNo1,.sNo{
    display: flex;
    justify-content: center;
}
.stnum{
    display: flex;
    width: 50px;
}
button{
    margin-top: 5%;
    margin-bottom: 5%;
}
#sNoform{
    display: flex;
}