.sign_up {
	margin-top: 100px;
	color:black;
	text-align: center;
}

.sign_up h1 {
	font-size: 1.5rem;
	color:black;
}

.sign_up h1 b {
	font-size: 2.25rem;
}

#plantb { 
	margin: 0 auto; 
	border: none; 
}

#plantb h2 {

    background-color: #999;
    height: auto;
    line-height: 3.125rem;
    font-size: 1.25rem;
    color: #FFF;
    margin: 0px 0 0.5rem;
    padding: 0px 1.25rem;
    text-transform: initial;
}

#plantb thead th:nth-child(2), #plantb tbody td:nth-child(2), #plantb thead th:nth-child(3), #plantb tbody td:nth-child(3) {
    border-left: 1px solid #aaa;
    border-right: 1px solid #aaa;
}