<html>
<head>
<style>.title {
background-color: lemonchiffon;
border: solid darkcyan;
width: 300px;
}</style>
</head>
<body>
<h2 class="title">Neighborhood Catsitters</h2>
<p>
<em>Leave your cat with a neighbor</em>
</p>
<img src="https://mimo.app/r/cat.png">
</body>
</html>]]>
Make sure to pick width
followed by :
and then 300px
, ;
.