/* Border */
.bdr 
{
    border-style: solid;
    border-radius: 5px;
}

/* Heading */
.hdng
{
    font-size: 20px;
    text-align: center;
    margin-bottom: 5px;
    font-weight: bold;
}

/* Margin */
.mt20p
{
    margin-top: 20%;
}
.mt25p
{
    margin-top: 25%;
}
.mt10
{
    margin-top: 10px;
}
.mt20
{
    margin-top: 20px;
}
.mb15
{
    margin-bottom: 15px;
}

/* Display */
.dn
{
    display: none;
}
.db
{
    display: block;
}