<div class="apoios">
<h7>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Apoios</h7>
<br>
<div class="thunnb">
    <img alt="" src="http://placehold.it/150x150" />
</div>
(...)
<div class="thunnb">
    <img alt="" src="http://placehold.it/150x150" />
</div>

.thunnb {
float: left;
padding: 10px;
width: 150px;
height: 150px;
}
.apoios img {
    border:1px solid #;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
}
h7 {
    font-size:22px !important;
    font-family:'Raleway', sans-serif !important;
    font-weight: normal !important;
    margin-bottom:6px !important;
    color: #FFFFFF !important;
    margin-top: 20px;
}
.apoio {
    display: inline-block;
}