请问我哪出了问题要怎么改,改了多遍都达不到想要的效果

图1是我做的图2是我想达到的效果,可是出了点问题,

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        body h2{ margin: 0 auto;
             margin-top: 10px;
             width: 56.25rem;
             height: auto;
             border-radius: 12px;
             text-align: center;
             color: black;
        }
      span{display: inline-block;
        margin: 1px 15px 5px 15px;
        font-size: 20px;
        }
        p{
            color:#5e2d00;
        }
        strong:hover  {
            color: red;
        }
        a{
            text-decoration: none;
        }
        img{
            border-radius: 11px;
            box-shadow: 1px 5px 5px 5px 1px #cccccc;
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        dl{
            margin: 0 auto;
            width: 775px;
            font-size: 23px;
            text-decoration: none;
            text-align: center;
        }
        dt{
            margin-top: 2px;
            float: left;
        }

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    <dt><img src="C:\Users\asus\Desktop\de828a9e8dacf57b2963038fe3287ae.jpg">Illustrator是一种用于出版,多媒体和在线图像的<font size="" color="#FF0000">标准矢量插画font>的软件。dt>
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img

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body{text-align: center;}