줄 바꿈 없이 텍스트 왼쪽에 이미지를 띄우는 방법은 무엇입니까?

<div class="post-container">
    <div class="post-thumb">
        <img src="thumb.jpg">
    </div>
    <div class="post-content">
        <h3 class="post-title">Post title</h3>
        <p>Post description description description etc etc etc</p>
    </div>
</div>

.post-container {
    margin: 20px 20px 0 0;  
    border: 5px solid #333;
    overflow: auto
}
.post-thumb {
    float: left
}
.post-thumb img {
    display: block
}
.post-content {
    margin-left: 210px
}
.post-title {
    font-weight: bold;
    font-size: 200%
}