body {background-color: #00FF00;}
.center {text-align: center}
.center1 { text-align: center;  border-top: 5px solid black}
.center2 { text-align: center;  border-top: 1px solid black}
.inp1 {
	text-align: center;
}
.inp2 {
	text-align: center;
	
}
.a1 {
	text-align: center; width: 100px; height: 100px; padding-top: 10px; font-size: 45px;
}
.a2 {
	text-align: center;
	width: 50px;
	height: 50px;
}
#reza #rez1a {color: red;}	

#plus {
height: 50px;
width: 50px;
text-align: center;
font-size: 45px;
}

.line {
color: red;
text-decoration: underline;
}