SOURCE

<div class="container">
    <div class="content">1</div>
    <div class="content">2</div>
    <div class="content">3</div>
    <div class="content">4</div>
    <div class="content">5</div>
    <div class="content">6</div>
    <div class="content">7</div>
    <div class="content">8</div>
    <div class="content">9</div>
    <div class="content">10</div>
</div>

.container {
    background-color: paleturquoise;
    height: 300px;
    /* width: 300px; */
    /* margin: 0 auto */
}
.content {
    /* margin:0 auto; */
    height:30px;
    /* width:80px; */
    width: 10%;
    min-width:50px;
    background-color: pink;
    display: inline-block;
}