<div class="container"> <div class="middle box">お問い合わせは<span class="break"></span>こちらから</div> </div>
body { font-size: 18px; line-height: 1.3; } .container { padding: 3em; } .container:after { clear: left; content: ""; display: block; } .box { background: #fff; border: #d8d8d8 1px solid; box-sizing: border-box; float: left; padding: 1em; text-align: center; } .middle { width: 200px; margin-right: 20px; } .break:before { content: "\A"; white-space: pre; }