html {height:100%;max-height:100vh;display: flex;flex-direction: column;align-items: center;justify-content: center;}

body {
    padding: 8%;
    font-family: verdana;
    text-align: center;
    margin-top: 1%;
    line-height: 30px;
    background-color: #FFF;
	display:flex;
	justify-content:center;
	align-items:center;
	flex-direction:column;
}
.txtblue {
    font-size: 16px;
    font-weight: 600;
    color: #000;
}
.txtwhite {
    font-size: 16px;
    color: #fff;
}
.txtyellow {
    font-size: 16px;
    color: red;
    text-decoration: underline;
}