Widget Title with custom icon

you can insert it via quick css and to a pseudocontainer f.e:

#footer .widgettitle::before {
  content: "\e800";
  font-family: "dentalimpex_icons";
  color: #D02514;
  position: relative !important;
  top: 3px;
  margin-right: 5px;
  font-weight: 400 !important;
  font-size: 1.2em;
}

you have to adjust the code to your needs – here only footer widgets are set

if you have a link to your site in private content area – i do not see – because i’m participant too.
But as a container like others you can set in the css code above a background-color.
if you only want to have that icon placed in your content – you don’t need the font-icon. You can place like this your svg itself. Then you can even have multicolor icons in front.
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See here an example test page ( with a custom font of mine – you had to change it to your font-family) : https://webers-testseite.de/#footer

and code a bit different:

#footer .widgettitle {
  padding-left: 40px;
  position: relative;
}

#footer .widgettitle::before {
  position: absolute !important;
  width: 30px !important;
  height: 30px !important;
  top: -2px;
  left: 0;
  content: "\e844";
  font-family: "fontellico";
  font-weight: 400 !important;
  font-size: 1.2em;
  line-height: 35px;
  background-color: #f5c61b;
  color: blue;
  text-align: center;
}