Por favor! Como centralizo esta tabela e preços? Ela somente fica na esquerda!

<style>
body, input, textarea {

font: 12px/20px "Helvetica Neue",Helvetica,Arial,sans-serif;
background-color: #FAFAFA;
color: #656565;
}

.pricing-table {
display: inline-block;
margin-top: 20px;
margin-bottom: 0;
width: 100%;
}

.layers {
box-shadow: 0 1px 1px rgba(0, 0, 0, 0),0 8px 0 -5px #FCFCFC,0 8px 1px -4px rgba(0, 0, 0, 0.15),0 17px 0 -10px #FCFCFC,0 17px 1px -9px rgba(0, 0, 0, 0.15);
}

.clearfix:after, .clearfix:before {

content: '\0020';
display: block;
overflow: hidden;
visibility: hidden;
width: 0;
height: 0;
}

[class *="col-"] {

margin: 0;
position: relative;
margin-right: 30px;
margin-bottom: 20px;
float: left;
}
.col-3 {
width: 210px;
}

.plan-item {
position: relative;
overflow: hidden;
border: 1px solid #E2E1E0;
-webkit-border-radius: 2px;
-moz-border-radius: 2px;
border-radius: 2px;
text-align: center;
background-color: #FFF;
-webkit-transition: all .2s linear;
-moz-transition: all .2s linear;
-o-transition: all .2s linear;
-ms-transition: all .2s linear;
transition: all .2s linear;
background-image: url(http://hbzone.hbthemes.netdna-cdn.com/themes/aegaeus_wp/wp-content/themes/AegaeusWP/images/sprites/action-border.png);
background-repeat: repeat-x;
background-position: center bottom;
}

.plan-item-header {
padding: 0px 15px 15px;
text-decoration: none;
color: #767676;
-webkit-border-top-left-radius: 2px;
-webkit-border-top-right-radius: 2px;
-moz-border-radius-topleft: 2px;
-moz-border-radius-topright: 2px;
border-top-left-radius: 2px;
border-top-right-radius: 2px;
border-bottom: 1px solid #F4F4F4;
background-color: #FCFCFC;
-webkit-transition: all .2s ease-out;
-moz-transition: all .2s ease-out;
-o-transition: all .2s ease-out;
transition: all .2s ease-out;
}

h4 {

font-size: 16px;
letter-spacing: -.2px;
line-height: 36px;
}

.plan-item ul {

margin: 20px 0 0;
}

.plan-item li, .plan-item ul {

margin: 0;
padding: 0;
}

.plan-item li, .plan-item ul {

margin: 0;
padding: 0;
}

.plan-item li:nth-child(even) {

background-color: #FAFAFA;
}

.plan-item li {

padding: 10px 20px;
border-bottom: solid 1px #F4F4F4;
color: #545454;
-webkit-transition: all .2s ease-out;
-moz-transition: all .2s ease-out;
-o-transition: all .2s ease-out;
transition: all .2s ease-out;
}

.plan-item-button {
padding: 30px 0;
}

.plan-item-button a {

padding: 10px 20px;
background-color: #567;
color: #D9D9D9;
font-size: 12px;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
font-weight: 700;
-webkit-transition: all .2s ease-out;
-moz-transition: all .2s ease-out;
-o-transition: all .2s ease-out;
transition: all .2s ease-out;
-moz-box-shadow: inset 0 14px 0 0 rgba(190,190,190,.1);
-webkit-box-shadow: inset 0 14px 0 0 rgba(190, 190, 190, 0.1);
box-shadow: inset 0 14px 0 0 rgba(190, 190, 190, 0.1);
 text-decoration: none;
}
.clearfix {
zoom: 1;
}

.plan-item ul {

margin: 20px 0 0;
}

ol, ul {

list-style: none;
}

.plan-item-button a:hover, .page-pagination a.current {

background-color: #FF6838;
}

.plan-item:hover{

border-top-color: #FF6838;
}

li.plan-item-price {

margin-top: -19px;
font-size: 26px;
padding: 20px;
line-height: 1!important;
color: #656565;
font-weight: 700;
}

</style>

<div class="pricing-table clearfix">
<div class="col-3"><div class="plan-item layers"><h4 class="plan-item-header">Simestral</h4><ul class="plan-item-features">
<li class="plan-item-price">R$000</li>
<li>Válido por 6 meses</li>
<li>Domínio e hospedagem inclusos</li>
<li>1 E-mail Personalizado (10GB de espaço)</li>
<li>Cobrada taxa mínima de Atualização</li>
<li>Site seguro</li>
<li>Suporte via e-mail</li>
</ul><div class="plan-item-button"><a href="#">ADQUIRIR</a></div></div></div>
<div class="col-3"><div class="plan-item layers"><h4 class="plan-item-header">Anual</h4><ul class="plan-item-features">
<li class="plan-item-price">R$000</li>
<li>Válido por 1 Ano</li>
<li>Domínio e hospedagem inclusos</li>
<li>2 E-mails Personalizados (10GB de espaço)</li>
<li>Desconto na taxa mínima de Atualização</li>
<li>Site seguro</li>
<li>Suporte via E-mail/Whatsapp</li>
</ul><div class="plan-item-button"><a href="#">ADQUIRIR</a></div></div></div>
<div class="col-3"><div class="plan-item layers"><h4 class="plan-item-header">Pentacampeão</h4><ul class="plan-item-features">
<li class="plan-item-price">R$000</li>
<li>Válido por 5 Anos</li>
<li>Domínio e hospedagem inclusos</li>
<li>10 E-mails Personalizados (10GB de espaço)</li>
<li>Sem taxa de Atualização</li>
<li>Site seguro</li>
<li>Suporte via E-mail/Whatsapp/Telefone</li>
</ul><div class="plan-item-button"><a href="#">ADQUIRIR</a></div></div></div>
</div>