how to make text bold and underline in css code example

Example 1: line through in css

x {
  text-decoration: line-through;
}

Example 2: underline text using css

/* Using 'text-decoration' property with 'underline' value. we can draw underline below the text using css */
<style>
p {
  text-decoration: underline;
}
</style>
<p>Hello all Welcome here !!!</p>